Perhaps you should try some spelling variations:
nhanh dong » hanh dong, nhanh chong, anh dong
thai nhung » thi nhung, tham nhung, thai vung
nhung cong » dung cong, thong cong, hang cong
dong thai » duong thai, dong tai, cong thai
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach

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: theo chu sach - nhanh dong thai nhung cong ((tinh toan) OR (anh tuan)) cau~.
• Adding a wildcard symbol may retrieve word variants: theo chu sach - nhanh dong thai nhung cong ((tinh toan) or (anh tuan)) cau*.