Perhaps you should try some spelling variations:
thanh vuong » thanh huong, thanh cuong, thanh duong
thanh vung » thanh tung, thanh hung, thanh dung
hieu xanh » chieu xanh, hieu manh, hieu nganh
bang cong » dang cong, bang song, hang cong
doc hieu » toc thieu, hoc thieu, hoc hien
tam bang » tao bang, tam ban, thai bang
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap

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 - ((thanh vung) OR (thanh vuong)) tam bang cong tac toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - ((thanh vung) OR (thanh vuong)) tam bang cong tac toan cao".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - ((thanh vung) OR (thanh vuong)) tam bang cong tac toan cao*.