Perhaps you should try some spelling variations:
thinking losing » thinking long, thinking using, thinking leading
wang liang » wang yang
1 abstract » 2 abstract, 3 abstract, 4 abstract
wang jing » wang ning, wang yang, wang yong
sie sich » die sich, wie sich, die sicht
sind ein » und ein, sind die, sind wir

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: wang ((wang jing) OR (wang liang)) 1 abstract thinking losing ((sie sich) OR (sind ein)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((wang jing) or (wang liang)) 1 abstract thinking losing ((sie sich) or (sind ein)) ;*.