Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu, hoc hien
hanh mang » nhanh mang, hanh trang, nhanh lang
dung cong » dung trong
cong tac » cong ty
tac tran » tan tran, tac trai, tac tren
tran cau » tran chau, toan cau, ran cau
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 chieu) or (hoc thieu)) tinh - ((hanh mang) or (hanh trinh)) va dung cong tac tran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (hoc thieu)) tinh - ((hanh mang) OR (hanh trinh)) va dung cong tac tran cau.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (hoc thieu)) tinh - ((hanh mang) or (hanh trinh)) va dung cong tac tran cau*.