Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
trung cua » truong cua, trung tuan, trung cap
tran tuan » tran xuan, tran quang, tran thanh
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
cong van » cong vang, cong san, song van
van than » van thanh, van thang, van tuan
than cau » toan cau, phan cau, than cap

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 - thanh ((trung cua) OR (tran tuan)) nhung cong van than cau~.
• Adding a wildcard symbol may retrieve word variants: theo chu sach - thanh ((trung cua) or (tran tuan)) nhung cong van than cau*.