I think that the problem is inside this mod, because in details page all those keyword are displayed properly, without those "ue"
And the links in detais page look like:
/search.htm?search_keywords=%D5%E0%F0%FC%EA%EE%E2
and not:
/search.htm?search_keywords=Харueков
like in output of your MOD.
Is it possible to parse it likewise the details page do? With corerect symbols etc
: