Perhaps you should try some spelling variations:
doanh hoan » doanh doanh, doanh khoa, doanh nhan
hang cong » dang cong, hang nong, bang cong
doc hieu » hoc thieu, hoc hien
hoan cua » hoa cua, toan cua, han cua
cua hang » cua dang, cua nhung, cua cong
cong dan » cong san, cong tan, huong dan
thi cao » thai cao, thi bao, thi cam
thi hao » thi thao, thi hai, thi ha

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) OR (toc thieu)) xanh - doanh hoan cua hang cong dan ((thi cao) or (thi hao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (toc thieu)) xanh - doanh hoan cua hang cong dan ((thi cao) OR (thi hao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) OR (toc thieu)) xanh - doanh hoan cua hang cong dan ((thi cao) or (thi hao))".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) OR (toc thieu)) xanh - doanh hoan cua hang cong dan ((thi cao) or (thi hao))*.