Q: When searching by keyword, the results keep coming up with fewer results than expected.

A: Keyword searches are driven by the words that you enter in your profile.

Both the "Search People" (Magnifying Glass) and the regional public website keyword queries rely on the keywords that YOU enter into your profile.  The industry\classification search is separate from this field.  So be sure to click on the MY ACCOUNT icon and enter keywords related to your profession so that people can find you when they have a referral for you!