Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
luan dong » luan cong, quan dong, luan nong
dong cong » duong cong, dung cong, dang cong
ho chieu » theo chieu, doi chieu, mot chieu
anh dong » anh huong, anh son
cong tac » cong ty
tac hanh » tac thanh, tac danh, sac hanh
hanh cac » hang cac, hanh cat, nhanh cay

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)) xanh - ((hanh chinh) or (anh dong)) luan dong cong tac hanh cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) xanh - ((hanh chinh) OR (anh dong)) luan dong cong tac hanh cac.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) xanh - ((hanh chinh) or (anh dong)) luan dong cong tac hanh cac*.