Perhaps you should try some spelling variations:
china gender » china under, child gender, chiefs gender
tuan china » wuhan china, can china, taiwan china
wing yan » wang yan, wing ian, wang yang
wing tan » wing ian, liang tan, hong tan
yang jui » yang judy, yang xi, yang yi
von sap » von sa, von sam, von sach
lai » laid

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: ((wing yan) OR (wing tan)) tuan china gender ((yang jui) OR (yang di)) ((von sap) OR (wong lai)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wing yan) OR (wing tan)) tuan china gender ((yang jui) or (yang di)) ((von sap) or (wong lai)) ;~".
• Adding a wildcard symbol may retrieve word variants: ((wing yan) OR (wing tan)) tuan china gender ((yang jui) or (yang di)) ((von sap) or (wong lai)) ;*.