Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
congo can » congo call, congo a, congo war
yang fan » zhang fan, yang dean, yang jin
song min » song ming, gong min, jong min
cong van » duong van, cong sun
wu song » wu fong, wu gong, kyu song
yi wu » yi xu

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 fan) or (yang yang)) yi wu song min ((congo can) OR (cong van)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yang fan) OR (yang yang)) yi wu song min ((congo can) OR (cong van)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yang fan) or (yang yang)) yi wu song min ((congo can) OR (cong van)) ;*".