You can use regular expressions and other search modifiers (see HelpOnSearching), an example:
regex:seriali[sz]e
Or go directly to a page, or create a new page by entering its name here:
If you like to browse manually, good starting points to explore a wiki are:
RecentChanges: see where people are currently working
TitleIndex: a list of all pages in the wiki
WordIndex: a list of all words that are part of page title (thus, a list of the concepts in a wiki)
WikiSandBox: feel free to change this page and experiment with editing
SiteNavigation: a longer list of things to try