Perhaps you should try some spelling variations:
sparing lives » saving lives
risk sparing » risk sharing, risk bearing, risk scoring
lives hoang » lives moving
dong yang » dong hoang, wang yang, yang yang
dong skin » dong sin, dof skin
hoang shu » hoang vu, cong shu, hoang sy
dong bin » dong sin, dong di, dann bin
hua risk » a risk, cva risk, era risk

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

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