Perhaps you should try some spelling variations:
change dealing » change leading, change modelling, change learning
gender change » gender age
yan yuan » yan guan, fang yuan, nan yan
z gender » 2 gender, 3 gender, 1 gender
date sub » case sub, note sub
data sub » data set, data say, data s5
yuan z » yuan zi, yuan _
spur » sur

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: (wan OR lang) yan yuan z gender change dealing ((((date sub) OR (data sub))) OR (der spur)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wan or lang) yan yuan z gender change dealing ((((date sub) OR (data sub))) or (der spur)) ;~".
• Adding a wildcard symbol may retrieve word variants: (wan or lang) yan yuan z gender change dealing ((((date sub) OR (data sub))) or (der spur)) ;*.