Perhaps you should try some spelling variations:
boost during » roosts during, books during, boom during
cost during » crust during, west during, roosts during
wong shiu » cong shu, song shin, wong sau
wing ran » wing ian, wing tan, wing sun
ran ying » fan ying, tan ying, jin ying
ying end » big end
wong siu » kong siu, wong sau, wong siew

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