Perhaps you should try some spelling variations:
tieu hanh » dieu hanh, tiem hanh, tien hanh
dung cong » dung trong
manh toan » thanh toan, anh tuan, tinh toan
anh nang » ganh nang, anh bang, anh dang
san toan » van toan, dan toan, xuan toan
nang va » nang van, hang va, nang ma
va dung » van dung, va duong, vat dung

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu hanh - anh nang va dung cong ((san toan) or (manh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu hanh - anh nang va dung cong ((san toan) OR (manh toan)) cau.
• Adding a wildcard symbol may retrieve word variants: theo tieu hanh - anh nang va dung cong ((san toan) or (manh toan)) cau*.