Perhaps you should try some spelling variations:
yang liang » wang liang, yang yang, peng liang
yan liang » wang liang, you liang, yan wang
yuan ming » yuan ting, kian ming, tuan minh
ming cong » minh cong, ming kong, ming code
wang dan » wang yan, wang ban, wang yidan
yang li » yang lin, yang di, yang xi
li yuan » liu yuan, li quan, li yun

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

• If you are trying to use Boolean operators, they must be ALL CAPS: wang dan ((yang li) OR (((yang liang) OR (yan liang)))) li yuan ming cong shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang dan ((yang li) or (((yang liang) OR (yan liang)))) li yuan ming cong shu ;~".
• Adding a wildcard symbol may retrieve word variants: wang dan ((yang li) or (((yang liang) OR (yan liang)))) li yuan ming cong shu ;*.