Perhaps you should try some spelling variations:
truong luan » truong luat, truong quang, tong luan
truong quan » trong quan, thong quan, luong quan
theo chieu » ho chieu, theo chu, thi chieu
nhung cong » dung cong, thong cong, hang cong
cong tac » cong ty
tac phan » tac pham, tai phan, tac phat
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (theo tieu)) sach - thanh ((truong luan) OR (truong quan)) nhung cong tac phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo tieu)) sach - thanh ((truong luan) OR (truong quan)) nhung cong tac phan dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (theo tieu)) sach - thanh ((truong luan) OR (truong quan)) nhung cong tac phan dau".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (theo tieu)) sach - thanh ((truong luan) OR (truong quan)) nhung cong tac phan dau*.