Perhaps you should try some spelling variations:
yang liang » wang liang, yang yang, peng liang
yan liang » wang liang, you liang, yan wang
hoang shu » hoang vu, hoang sy, hoang h
wang lin » wang li, wang qin, yang lin
rong van » cong van, trang van, duong van
wan yan » wang yan, nan yan, wai yan
li rong » yi rong, li cong, li song

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

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