Perhaps you should try some spelling variations:
cost sharing » risk sharing, cost savings
sharing hays » sharing his, sharing gains, sharing parts
wang yang » wang yan, wang liang, wang yanling
wei yang » pei yang, wei wang, wei yang's
hua cost » a cost, eu cost, run cost
song sau » wong sau, song pae, song so
sar » sara, star, saur

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: ((wei yang) OR (wang yang)) wang hua cost sharing hays ((song sau) OR (kong sar)) ;~.
• Adding a wildcard symbol may retrieve word variants: ((wei yang) or (wang yang)) wang hua cost sharing hays ((song sau) or (kong sar)) ;*.