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

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