Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu manh » hieu manh, tien manh, trieu minh
va duong » van duong, va tuong, va huong
vat dung » van dung, va dung, viet dung
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: toc thieu manh - thanh trung ((va duong) or (vat dung)) cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu manh - thanh trung ((va duong) OR (vat dung)) cong tac toan ban.
• Adding a wildcard symbol may retrieve word variants: toc thieu manh - thanh trung ((va duong) or (vat dung)) cong tac toan ban*.