Perhaps you should try some spelling variations:
lost ratings » load ratings, lost earnings, bond ratings
ratings risk » patients risk
liang yang » liang ying, wang yang, huang yang
yang yang » wang yang, wang yan
among ers » among peers, among users, among east
can lost » can cost, can lose, can post

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((liang yang) OR (yang yang)) can lost ratings risk among ers ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((liang yang) OR (yang yang)) can lost ratings risk among ers ;*".