Perhaps you should try some spelling variations:
sharing risk » sharing best, during risk
cost sharing » risk sharing, cost savings
ying hua » ming hua, wang hua, ying zhu
how safe » how safety, how space, how scale
ying eu » ying zhu, using eu
how she » how some, how shih
zhen » zheng, when, chen

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

• Performing a fuzzy search may retrieve terms with similar spellings: zhen zhang ((ying eu) or (ying hua)) cost sharing risk ((how she) OR (how safe)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: zhen zhang ((ying eu) OR (ying hua)) cost sharing risk ((how she) OR (how safe)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "zhen zhang ((ying eu) or (ying hua)) cost sharing risk ((how she) OR (how safe)) ;*".