Perhaps you should try some spelling variations:
germany gender » german gender, germany under, germany der
gender wage » gender based
plan loans » plan long
wage plan » wages plant, stage plan, wage law
yang jui » yang judy, yang xi, yang yi
wan yan » wang yan, nan yan, wai yan
drk » dirk, dark, derk
gem » igem

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((wan yan) OR (yang jui))) OR (yang di))drk 2012 germany gender wage plan loans gem ;~".
• Adding a wildcard symbol may retrieve word variants: ((((wan yan) OR (yang jui))) OR (yang di))drk 2012 germany gender wage plan loans gem ;*.