Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
cong thanh » dong thanh, cong trinh, truong thanh
canh hang » tranh hang, cang thang, danh thang
ho chieu » hoc thieu, doi chieu, mot chieu
cong tan » cong tac, cong san, cong ty
phan cau » phan dau, phan cac, phan tu
va cong » tai cong, cua cong

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 - canh hang va cong ((cong tan) or (cong thanh)) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) sach - canh hang va cong ((cong tan) OR (cong thanh)) phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (theo chieu)) sach - canh hang va cong ((cong tan) or (cong thanh)) phan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (theo chieu)) sach - canh hang va cong ((cong tan) or (cong thanh)) phan cau*.