Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
trinh luan » trinh quan, trinh han, trinh toan
dong cong » duong cong, dung cong, dang cong
ho chieu » hoc thieu, doi chieu, mot chieu
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
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: ((ho chieu) OR (theo chieu)) sach - hanh ((trinh luan) or (trinh luat)) dong cong tan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) sach - hanh ((trinh luan) OR (trinh luat)) dong cong tan than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (theo chieu)) sach - hanh ((trinh luan) or (trinh luat)) dong cong tan than cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (theo chieu)) sach - hanh ((trinh luan) or (trinh luat)) dong cong tan than cau*.