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    <p>This should work for you</p> <pre><code>^(?:search for|look for|find)\s*(.*?)(?:\s*(?:in|around|at)\s*(.*))?$ </code></pre> <p>You can add more clauses like <code>look for/in/at</code> by adding moer <strong>or</strong> clauses to the non-capturing groups.</p> <p><strong>Explanation:</strong></p> <pre><code>@" ^ # Assert position at the beginning of a line (at beginning of the string or after a line break character) (?: # Match the regular expression below # Match either the regular expression below (attempting the next alternative only if this one fails) search\ for # Match the characters “search for” literally | # Or match regular expression number 2 below (attempting the next alternative only if this one fails) look\ for # Match the characters “look for” literally | # Or match regular expression number 3 below (the entire group fails if this one fails to match) find # Match the characters “find” literally ) \s # Match a single character that is a “whitespace character” (spaces, tabs, and line breaks) * # Between zero and unlimited times, as many times as possible, giving back as needed (greedy) ( # Match the regular expression below and capture its match into backreference number 1 . # Match any single character that is not a line break character *? # Between zero and unlimited times, as few times as possible, expanding as needed (lazy) ) (?: # Match the regular expression below \s # Match a single character that is a “whitespace character” (spaces, tabs, and line breaks) * # Between zero and unlimited times, as many times as possible, giving back as needed (greedy) (?: # Match the regular expression below # Match either the regular expression below (attempting the next alternative only if this one fails) in # Match the characters “in” literally | # Or match regular expression number 2 below (attempting the next alternative only if this one fails) around # Match the characters “around” literally | # Or match regular expression number 3 below (the entire group fails if this one fails to match) at # Match the characters “at” literally ) \s # Match a single character that is a “whitespace character” (spaces, tabs, and line breaks) * # Between zero and unlimited times, as many times as possible, giving back as needed (greedy) ( # Match the regular expression below and capture its match into backreference number 2 . # Match any single character that is not a line break character * # Between zero and unlimited times, as many times as possible, giving back as needed (greedy) ) )? # Between zero and one times, as many times as possible, giving back as needed (greedy) $ # Assert position at the end of a line (at the end of the string or before a line break character) " </code></pre>
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    1. POa regex expression to extract 1st group + 2nd group or 1st group only if no 2nd group (including variations)
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    1. USNarendra Yadala
    1. USNarendra Yadala
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    1. POa regex expression to extract 1st group + 2nd group or 1st group only if no 2nd group (including variations)
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      1. VTUpMod
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    1. CO+1 for great effort
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    2. COThanks for your very well documented answer. Unfortunately I'm getting the same result: it works for "search for fenway park in boston" and correctly extracts each group separately but doesn't match anything in "search for fenway park" because the "in|around|at" group is not optional. If I make it optional then everything is matched in one group (not what I want).
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    3. CO@BlazingFrog Updated the regex. Check it now.
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      1. USNarendra Yadala
 

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