Perhaps you should try some spelling variations:
yang yuan » fang yuan, yan yuan, wang yuhan
shang hai » shang kai, dang hai, chang ha
hong jong » hong kong
tan yong » tan hong, tan yang, tan ying
tan kong » tan hong
yang yun » yang jun, tang yun, yang yue
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 yong) or (tan kong)) ((yang yuan) or (yang yun)) wang yan jie ((shang hai) or (hong jong)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tan yong) OR (tan kong)) ((yang yuan) OR (yang yun)) wang yan jie ((shang hai) OR (hong jong)) ;.
• Adding a wildcard symbol may retrieve word variants: ((tan yong) or (tan kong)) ((yang yuan) or (yang yun)) wang yan jie ((shang hai) or (hong jong)) ;*.