Perhaps you should try some spelling variations:
wang yidan » wang yan
yang yang » wang yang, wang yan
yang chik » nong chik, wang chi
wang dan » wang yan, wang ban, wang yang
yang nhi » yang di, yang jui, yang xi
hoang sy » hoang vu
ya six » a six
six we » six week, six west

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yang yang) or (((wang dan) OR (wang yidan)))) ya six we ((yang nhi) or (yang chik)) hoang sy ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yang) OR (((wang dan) OR (wang yidan)))) ya six we ((yang nhi) OR (yang chik)) hoang sy ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang yang) or (((wang dan) OR (wang yidan)))) ya six we ((yang nhi) or (yang chik)) hoang sy ;*".