Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
thanh tay » thanh tai, thanh toan, thanh thuy
doc hieu » toc thieu, hoc thieu, hoc hien
mang cua » manh cua, dung cua, ban cua
ban quan » van quan
dung van » duong van, dung va, dung von
dang van » hoang van, hang va

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 manh - hanh ((mang cua) or (ban quan)) nhung ((dung van) or (dang van)) thanh tay~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu manh - hanh ((mang cua) OR (ban quan)) nhung ((dung van) OR (dang van)) thanh tay.
• Adding a wildcard symbol may retrieve word variants: doc hieu manh - hanh ((mang cua) or (ban quan)) nhung ((dung van) or (dang van)) thanh tay*.