This search engine allows you to search for content in five languages (all the tokenizable language content in the Guidelines)[1], so it does not attempt to use stemming. However, the search supports wildcards ("*" means any number of characters, while "?" means a single character), so you can search for partial matches in any language. The wildcard support includes character classes, so you can use wildcards to account for spelling idiosyncracies by searching for (e.g.) analy[zs]* to find both analysing and analyzed. The search also supports boolean (plus and minus) prefixes, so you can find (for example) all pages which contain "analyse" but not "analyze" by searching for +analyse -analyze. Finally, you can search for exact phrases using quotation marks: "a digitized text" will find only that phrase.