Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
than wang » qian wang, than war, yan wang
chen wang » chen yang, chen rong, chen ping
ying jin » yang jin, jing ji, yang jie
hong hai » shang hai, zhong tai, dang hai
chang ha » chang mae
yang ka » yang fan, yang yao

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

• If you are trying to use Boolean operators, they must be ALL CAPS: yang yang ka ((than wang) OR (chen wang)) ying jin ((hong hai) OR (chang ha)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yang yang ka ((than wang) OR (chen wang)) ying jin ((hong hai) or (chang ha)) ;~".
• Adding a wildcard symbol may retrieve word variants: yang yang ka ((than wang) OR (chen wang)) ying jin ((hong hai) or (chang ha)) ;*.