Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
canh trinh » canh tranh, hanh trinh, canh tinh
trinh han » trinh quan
han nhung » hanh nhung, hon nhung, ban nhung
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
phan cac » nhan cach, phan dau, phan lap

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 - canh trinh han nhung ((cong tan) or (cong san)) phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - canh trinh han nhung ((cong tan) OR (cong san)) phan cac.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - canh trinh han nhung ((cong tan) or (cong san)) phan cac*.