Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
tran thanh » ban thanh, van thanh, quan thanh
hoc chieu » hoc thieu, ho chieu, hoc hien
doanh cua » doanh luan
tran tuan » tran xuan, tran quang, tranh luan
dung cong » dung trong
cong tan » cong tac, cong san, cong thanh
tan van » tran van, tang van, luan van

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: hoc chieu sach - hanh ((doanh cua) OR (((tran tuan) OR (tran thanh)))) dung cong tan van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - hanh ((doanh cua) or (((tran tuan) OR (tran thanh)))) dung cong tan van ban~".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh ((doanh cua) or (((tran tuan) OR (tran thanh)))) dung cong tan van ban*.