Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
doi chieu » doc hieu, doi chi, ho chieu
lanh manh » lanh tranh, lan anh, van manh
hang cong » dang cong, hang nong, bang cong
cong san » cong tac
san giai » dan giai, san giao, han giai
giai cao » giai ca, giai cac, giai bai
manh va » hanh va, anh va, minh va
va hang » van hang, va nang, va lang

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 (doi chieu)) sach - lanh manh va hang cong san giai cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (doi chieu)) sach - lanh manh va hang cong san giai cao.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (doi chieu)) sach - lanh manh va hang cong san giai cao*.