Perhaps you should try some spelling variations:
savings risk » savings cross, savings rate, savings bank
ratings risk » patients risk
liang yang » wang yang, yang yang, huang yang
liang ying » liang liying, huang ying, zhang ying
wrong who » wrong why, wrong what, wrong when
der cost » oder cost, user cost, debt cost

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 (liang ying)) der cost ((savings risk) OR (ratings risk)) wrong who ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((liang yang) OR (liang ying)) der cost ((savings risk) OR (ratings risk)) wrong who ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((liang yang) or (liang ying)) der cost ((savings risk) OR (ratings risk)) wrong who ;".
• Adding a wildcard symbol may retrieve word variants: wang ((liang yang) or (liang ying)) der cost ((savings risk) OR (ratings risk)) wrong who ;*.