Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
trung cua » truong cua, trung tuan, trung cap
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
tung cua » tuong cua, dung cua, tang cua
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu sach - thanh ((tung cua) or (trung cua)) nhung cong tac than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - thanh ((tung cua) OR (trung cua)) nhung cong tac than cau.
• Adding a wildcard symbol may retrieve word variants: theo chu sach - thanh ((tung cua) or (trung cua)) nhung cong tac than cau*.