Perhaps you should try some spelling variations:
rising costs » rising cost, driving costs, firing costs
funding risk » funding list, building risk, fund risk
yang using » yang jing, making using, change using
wang yang » wang yan, wang liang, wang yanling
ai costa » can costa, _ costa, da costa
au costa » can costa, _ costa, da costa
how shih » how six, how she

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 yang using ((ai costa) OR (au costa)) ((rising costs) OR (funding risk)) how shih ;~.
• Adding a wildcard symbol may retrieve word variants: wang yang using ((ai costa) or (au costa)) ((rising costs) or (funding risk)) how shih ;*.