Perhaps you should try some spelling variations:
yan liang » yang liang, wang liang, you liang
congo can » congo call, congo a, congo war
hoang shu » hoang vu, cong shu, hoang sy
cong van » duong van, cong sun
yang li » yang lin, yang di, yang yi
yang xi » yang di, yang yi, yang jui
wang » wing, wan, lang

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 li) or (yang xi))) or (yan liang)) jiu ((cong van) OR (congo can)) hoang shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan ((((yang li) OR (yang xi))) OR (yan liang)) jiu ((cong van) OR (congo can)) hoang shu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan ((((yang li) or (yang xi))) or (yan liang)) jiu ((cong van) OR (congo can)) hoang shu ;*".