Perhaps you should try some spelling variations:
lose ratings » close readings, bond ratings, risk ratings
load ratings » load rating, bond ratings, oed ratings
risk wrong » risk among, risk along
wang yong » wang yang, wang hyoung, wang shiyong
wrong who » wrong why, wrong what, wrong when
yang fan » zhang fan, yang dean, yang yang

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 yong) OR (wang yan)) yang fan ((lose ratings) OR (load ratings)) risk wrong who ;~.
• Adding a wildcard symbol may retrieve word variants: ((wang yong) or (wang yan)) yang fan ((lose ratings) or (load ratings)) risk wrong who ;*.