Perhaps you should try some spelling variations:
shang hai » shang kai, dang hai, chang ha
wang yang » wang yan, wang liang, wang yanling
yan yang » yang yang, dan yang, tan yang
yao yang » yang yang
hua wang » hwa wang, hua jiang, yuan wang
yang jun » yang jui, pang jun, yang jin
hong hai » zhong tai, dang hai, hong tan

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

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