Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
yan wang » yuan wang, qian wang, yan liang
lan minh » tuan minh, land mine, sang minh
hong shu » cong shu, tong shui, wong shiu
tong hui » wang hui
li lan » lai lan, li lin, li nan
li li » li lin, li l, li lu

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 wang) OR (yang yang)) li li lan minh ((hong shu) or (tong hui)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yan wang) OR (yang yang)) li li lan minh ((hong shu) OR (tong hui)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yan wang) OR (yang yang)) li li lan minh ((hong shu) or (tong hui)) ;*".