Perhaps you should try some spelling variations:
thinking losing » thinking long, thinking using, thinking leading
1 abstract » 2 abstract, 3 abstract, 4 abstract
wang jing » wang ning, wang liang, wang yong
wang yang » wang yan, wang liang, wang yanling
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 yang)) 1 abstract thinking losing ((sie sich) OR (sind ein)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((wang jing) OR (wang yang)) 1 abstract thinking losing ((sie sich) or (sind ein)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((wang jing) OR (wang yang)) 1 abstract thinking losing ((sie sich) or (sind ein)) ;*.