Perhaps you should try some spelling variations:
yuan chang » yuan cheng, huang chang, han chang
yang yang » wang yang, wang yan
yang yuan » fang yuan, yan yuan, yang yun
chang yan » zhang yan, chang yun, wang yan
hong jong » hong kong
tan yang » dan yang, tan ying, tan yong
hong hai » shang hai, zhong tai, dang hai
yan jie » yang jie, yan jiu, yang jin

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

• Performing a fuzzy search may retrieve terms with similar spellings: tan yang yang yuan chang yan jie ((hong hai) or (hong jong)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tan yang yang yuan chang yan jie ((hong hai) OR (hong jong)) ;.
• Adding a wildcard symbol may retrieve word variants: tan yang yang yuan chang yan jie ((hong hai) or (hong jong)) ;*.