Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
doanh cua » doanh luan
tran tuan » tran xuan, tran quang, tran thanh
dung cong » dung trong
ho chieu » hoc thieu, doi chieu, mot chieu
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: ((ho chieu) OR (theo chieu)) sach - hanh ((doanh cua) OR (tran tuan)) dung cong tan van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (theo chieu)) sach - hanh ((doanh cua) or (tran tuan)) dung cong tan van ban~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (theo chieu)) sach - hanh ((doanh cua) or (tran tuan)) dung cong tan van ban*.