Perhaps you should try some spelling variations:
luan tuong » luan luong, luat thuong, xuan truong
hoc thieu » toc thieu, hoc hien
hanh dong » anh dong, ha dong
dong luan » dung luan, tong luan, dong xuan
ho chieu » theo chieu, doi chieu, mot chieu
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
han tai » hang tai, nhan tai, van tai

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 (hoc thieu)) tinh - hanh dong luan tuong ((cong dan) OR (cong tan)) han tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) tinh - hanh dong luan tuong ((cong dan) OR (cong tan)) han tai.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (hoc thieu)) tinh - hanh dong luan tuong ((cong dan) OR (cong tan)) han tai".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) tinh - hanh dong luan tuong ((cong dan) OR (cong tan)) han tai*.