Perhaps you should try some spelling variations:
boost during » roosts during, books during, boom during
crust during » trust during, crisis during, credit during
wang yang » wang yan, wang liang, wang yanling
yang sang » yang yang, yang guang, yang liang
sang minh » kang minah, anh minh, song min
risk cong » risk coping, risk among, risk along

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: wang yang sang minh ((boost during) OR (crust during)) risk cong shu ;~.
• Adding a wildcard symbol may retrieve word variants: wang yang sang minh ((boost during) or (crust during)) risk cong shu ;*.