Perhaps you should try some spelling variations:
wang liang » wang yang
gong minh » gong min, gong meng, jong min
minh tong » minh cong, dinh tung, min hong
ran ying » fan ying, tan ying, jin ying
tong hui » wang hui
yang li » yang lin, yang di, yang xi
yi gong » yi rong, yi gang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ran ying ((wang liang) or (yang li)) yi gong minh tong hui ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ran ying ((wang liang) OR (yang li)) yi gong minh tong hui ;*.