Perhaps you should try some spelling variations:
hieu xanh » chieu xanh, hieu manh, hieu nganh
tang quan » tang luan, nang quan, tong quan
tong cong » trong cong, cong cong, dung cong
doc hieu » toc thieu, hoc thieu, hoc hien
tang qua » tang cua, tang quy, tang quang
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan ban » van ban

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 - anh ((tang qua) or (tang quan)) tong cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - anh ((tang qua) OR (tang quan)) tong cong tac toan ban.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - anh ((tang qua) or (tang quan)) tong cong tac toan ban*.