Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
cua thong » cua thuong, cua khong, cua tong
doc hieu » toc thieu, hoc thieu, hoc hien
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cap » khan cap, thanh lap, thanh cac
doi chi » doi khi

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (doi chi)) xanh - ((thanh tung) OR (thanh cong)) cua thong cong dan than cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) or (doi chi)) xanh - ((thanh tung) OR (thanh cong)) cua thong cong dan than cap~".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (doi chi)) xanh - ((thanh tung) OR (thanh cong)) cua thong cong dan than cap*.