Perhaps you should try some spelling variations:
boost during » roosts during, books during, boom during
cost during » crust during, west during, roosts during
wang yang » wang yan, wang liang, wang yanling
yang yang » wang yan
risk cong » risk coping, risk among, risk along
yang end » yang anda, yang mind, yang d

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

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