Perhaps you should try some spelling variations:
china gender » china under, child gender, chiefs gender
ying china » ming china, qing china, buying china
wang yang » wang yan, wang liang, wang yanling
yang ying » yang yang, yang jing, huang ying
yang mind » yang cindy, yang jin, sang minh
song ming » song bing, song min, gong min

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yang ying china gender ((yang mind) or (song ming)) dang (hai or haji) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang ying china gender ((yang mind) OR (song ming)) dang (hai OR haji) ;.
• Adding a wildcard symbol may retrieve word variants: wang yang ying china gender ((yang mind) or (song ming)) dang (hai or haji) ;*.