Perhaps you should try some spelling variations:
rating costs » trading costs, operating costs, training costs
risk rating » risk taking, risk sharing
wang yang » wang yan, wang liang, wang yanling
dong skin » dong sin, dong bin
costs how » cost low
how shu » how slum
a risk » _ risk
ka a » a a, k a

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang yang) or (dong skin)) ka a risk rating costs how shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang yang) OR (dong skin)) ka a risk rating costs how shu ;.
• Adding a wildcard symbol may retrieve word variants: ((wang yang) or (dong skin)) ka a risk rating costs how shu ;*.