Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
dung cong » dung trong
ho chieu » hoc thieu, doi chieu, mot chieu
cong dan » cong san, cong tan, huong dan
khan cap » khan ap, khoan cam, phan cac
than cap » thanh lap, thanh cac, than cua
tinh va » tich va, trinh van, trinh vat
va dung » van dung, va duong, vat dung

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