Perhaps you should try some spelling variations:
hieu xanh » chieu xanh, hieu manh, hieu nganh
trang cua » tang cua, trung cua, thang cua
tranh cua » doanh cua, manh cua
doc hieu » toc thieu, hoc thieu, hoc hien
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
than cao » toan cao, thai cao, than cap

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 xanh - hanh ((trang cua) OR (tranh cua)) nhung ((cong tan) or (cong tac)) than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - hanh ((trang cua) OR (tranh cua)) nhung ((cong tan) OR (cong tac)) than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - hanh ((trang cua) OR (tranh cua)) nhung ((cong tan) or (cong tac)) than cao".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh ((trang cua) OR (tranh cua)) nhung ((cong tan) or (cong tac)) than cao*.