Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang
yang lin » yang jin, wang lin, yang li
cong van » congo can, duong van, cong sun
van tong » van long, van hung, xin tong
tong hui » wang hui
yan lin » yuan lin, yan liang, wang lin
li cong » li rong, li song, jiu cong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang yang) OR (wang yanling)) ((((yan lin) or (yang lin))) or (yang di)) li cong van tong hui ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang yang) OR (wang yanling)) ((((yan lin) OR (yang lin))) OR (yang di)) li cong van tong hui ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang yang) OR (wang yanling)) ((((yan lin) or (yang lin))) or (yang di)) li cong van tong hui ;*".