Perhaps you should try some spelling variations:
wang liang » wang yang
yan zhang » yuan chang, bin zhang, han chang
zhang yan » zhang fan, zhang jian, wang yan
wie sind » sie sind, wie ein, wie sich
pang jun » yang jui
yan wie » van wie, kian wie
hong g » hong ng, hong w, hong 7
hai » hadi, haji, hari

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: yan zhang yan wie sind ((wang liang) OR (pang jun)) ((hong g) OR (dang hai)) ;~.
• Adding a wildcard symbol may retrieve word variants: yan zhang yan wie sind ((wang liang) or (pang jun)) ((hong g) or (dang hai)) ;*.