Perhaps you should try some spelling variations:
boost during » roosts during, books during, boom during
cost during » crust during, west during, roosts during
risk hong » risk among, risk along, risk how
ran ying » tan ying, jin ying, gao ying
fan ying » fan xing, tan ying, jin ying
hong shu » cong shu, tong shui, wong shiu

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: wing ((ran ying) OR (fan ying)) end ((cost during) OR (boost during)) risk hong shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wing ((ran ying) OR (fan ying)) end ((cost during) or (boost during)) risk hong shu ;~".
• Adding a wildcard symbol may retrieve word variants: wing ((ran ying) OR (fan ying)) end ((cost during) or (boost during)) risk hong shu ;*.