Perhaps you should try some spelling variations:
yang qiang » yang liang, yang yang, gong qiang
wang liang » wang yang
gast ying » gao ying
john song » john wong, john bonn, john ngosong
als gast » als last, als gabe, als gt
jin song » jie song, kim song, jin ying
shin » skin, sein, thin

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 ((yang qiang) OR (wang liang)) als gast ying ((jin song) OR (john song)) shin ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((yang qiang) or (wang liang)) als gast ying ((jin song) or (john song)) shin ;*.