It would be useful to have the advanced search filter games by language -- e.g. German, Russian, Japanese, etc. Since that info is stored in the versions, that should be possible, right?
Don't count on it - being able to filter on version was one of the most requested things in the market-place - which got completely overhauled and ... nothing, zilch filtering on language / versions.
This site is extremely US-centric - that's just the way it is.