Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
ho chieu » hoc thieu, doi chieu, mot chieu
cong san » cong tac
cong tan » cong tac, cong thanh, cong ty
toan cao » toan ban, toan tap

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 cua nhung ((cong san) or (cong tan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) sach - hanh trinh cua nhung ((cong san) OR (cong tan)) toan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (theo chieu)) sach - hanh trinh cua nhung ((cong san) or (cong tan)) toan cao*".