Perhaps you should try some spelling variations:
change leading » change learning, change dealing, change leader
yanling guang » yang guang
wan yanling » wang yanling, wang yangming, wang danning
z gender » 2 gender, 1 gender, 4 gender
3 gender » 2 gender
date sub » data sub, case sub, note sub
die spur » der spur

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 yanling guang ((z gender) OR (3 gender)) change leading ((date sub) OR (die spur)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan yanling guang ((z gender) OR (3 gender)) change leading ((date sub) or (die spur)) ;~".
• Adding a wildcard symbol may retrieve word variants: wan yanling guang ((z gender) OR (3 gender)) change leading ((date sub) or (die spur)) ;*.