The Mac IDE searches on exact strings, so "suppress banner" will ONLY find the exact string "suppress banner" as if there were quotes around the search term, rather than it being two separate words with an OR between them - my suggestion to fix that is to use quotes to denote specific strings that include spaces, otherwise treat the search as a list of words with OR. Using multiple words often results in no results because those words are never adjacent, or I can use single words, and with many common words I get so many irrelevant results that I can't find what I'm looking for.