Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
hua china » a china, era china, hua chen
chang thi » chang ha, chang gui, chang jui
wan yang » wang yang, dan yang, tan yang
eu china » 2 china, 4 china, 3 china
thi wong » thi hong, thi mong, t.j wong
wong yue » wang yue, hong yu

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

• Performing a fuzzy search may retrieve terms with similar spellings: wan yang yang ((hua china) OR (eu china)) chang thi wong yue ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan yang yang ((hua china) OR (eu china)) chang thi wong yue ;".
• Adding a wildcard symbol may retrieve word variants: wan yang yang ((hua china) OR (eu china)) chang thi wong yue ;*.