Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
hanh trang » thanh trung, canh tranh, hanh trinh
khong cong » thong cong, khong cang, chong cong
cua khong » hua khong, cua phuong, cua thuong
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than cao » toan cao, thai cao, 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 trang) or (hanh chinh)) cua khong cong tan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - ((hanh trang) OR (hanh chinh)) cua khong cong tan than cao.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - ((hanh trang) or (hanh chinh)) cua khong cong tan than cao*.