Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
qua dung » quang dung, su dung, qua song
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cau » toan cau, phan cau, than cap

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 sach - hanh trinh ((qua dung) or (ung dung)) cong tac than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - hanh trinh ((qua dung) OR (ung dung)) cong tac than cau.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh trinh ((qua dung) or (ung dung)) cong tac than cau*.