Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
nhung cong » dung cong, thong cong, hang cong
hanh sinh » hanh tinh, hanh dinh, hinh sinh
cua nhung » va nhung
thanh cac » hanh cac, thanh bac, thanh ca
ho chieu » hoc thieu, doi chieu, mot chieu
sinh cua » manh cua, dinh cuu, sinh va
cong tan » cong tac, cong san, cong thanh
than cap » khan cap, thanh lap, than cua

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)) tinh - hanh sinh cua nhung cong tan ((than cap) OR (thanh cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) tinh - hanh sinh cua nhung cong tan ((than cap) OR (thanh cac)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (theo chieu)) tinh - hanh sinh cua nhung cong tan ((than cap) OR (thanh cac))".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chieu)) tinh - hanh sinh cua nhung cong tan ((than cap) OR (thanh cac))*.