Perhaps you should try some spelling variations:
cost ratings » cost savings, costs savings, bond ratings
ratings risk » patients risk
kunst oder » kunst der, kunst des
risk bring » risk bearing, risk during, risk using
bring what » doing what, brief what, going what
wang » wing, wan, lang
kann » ann

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 yan ((((kant oder) OR (kunst oder))) OR (kann die)) cost ratings risk bring what ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan ((((kant oder) OR (kunst oder))) or (kann die)) cost ratings risk bring what ;~".
• Adding a wildcard symbol may retrieve word variants: wang yan ((((kant oder) OR (kunst oder))) or (kann die)) cost ratings risk bring what ;*.