Perhaps you should try some spelling variations:
wang yuhan » wang luhang, wang yan, wang yidan
yuhan fei » yuan fei, han fei, yan fei
yulu chen » yu chen
hong than » hong tan, long thanh, hong hai
yu cheng » yu chen, _ cheng
liang li » ling li, qiang li, liang wei
yang lin » yang jin, wang lin, yang li

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: wang yuhan fei ((yu cheng) OR (yulu chen)) ((liang li) OR (yang lin)) hong than ;~.
• Adding a wildcard symbol may retrieve word variants: wang yuhan fei ((yu cheng) or (yulu chen)) ((liang li) or (yang lin)) hong than ;*.