Perhaps you should try some spelling variations:
pricing costs » printing costs, driving costs, rising costs
wang danning » wang yanling, wang daoping, wang yangming
risk pricing » risk pooling, road pricing, cost pricing
how slum » how slow, how sun
how sub » how sun, flow sub
ka a » kai a, a a, k a
sin » sign, sind, skin

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 danning) OR (dong sin)) ka a risk pricing costs ((how slum) OR (how sub)) ;~.
• Adding a wildcard symbol may retrieve word variants: ((wang danning) or (dong sin)) ka a risk pricing costs ((how slum) or (how sub)) ;*.