Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
thi chieu » thi chien, thi hieu, theo chieu
luan dong » luan cong, quan dong, luan nong
dong cong » duong cong, dung cong, dang cong
anh dong » anh huong, anh son
cong tac » cong ty
tac khan » tac nhan, cac khoan, tac chuan
khan cap » khan ap, than cap, khoan cam

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) or (thi chieu)) xanh - ((canh tranh) or (anh dong)) luan dong cong tac khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (thi chieu)) xanh - ((canh tranh) OR (anh dong)) luan dong cong tac khan cap.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (thi chieu)) xanh - ((canh tranh) or (anh dong)) luan dong cong tac khan cap*.