Is there a way to view what people are searching for
There's no built-in feature, but you have a couple of choices:
1. Examine your webserver logs for hits on /wiki/Special:Search and look at the query
string parameters, which include the search terms.
2. Create a wiki extension that captures and stores the search terms. Useful hooks are
SpecialSearchResults, SpecialSearchNoResults, and SpecialSearchGo (in 1.17).
Before doing this, think VERY CAREFULLY about privacy. Search terms can reveal personal
information, and users may see this as a serious privacy violation. For example, on a
company wiki, suppose a boss sees that one of his employees has searched for
"maternity leave policy". This reveals something private about the employee
(that she is pregnant or planning to try), and it gives the boss an opportunity to
discriminate against the employee for a promotion decision, which could lead to legal
action, etc. This is just one small example.