Perhaps you should try some spelling variations:
trung thanh » truong thanh
manh trung » manh tung, thanh trung, manh hung
chiet tach » chieu sach
hieu manh » chieu xanh, hieu nganh, dieu hanh
thanh ban » thanh san, thanh van, thanh bac
ban cong » bang cong, van cong, phan cong
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: theo ((hieu manh) or (chiet tach)) - manh trung thanh ban cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu manh) OR (chiet tach)) - manh trung thanh ban cong tac toan cao.
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (chiet tach)) - manh trung thanh ban cong tac toan cao*.