Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
doi chieu » doc hieu, ho chieu, mot chieu
trinh vat » trinh van, trinh luat, sinh vat
hang cong » dang cong, hang nong, bang cong
vat hang » van hang, dat hang, va hang
cong van » cong vang, cong san, song van
doi chi » doi khi
ban cao » ban can, ban co, bac cao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (doi chi)) sach - hanh trinh vat hang cong van ((ban cao) or (bao cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doi chi)) sach - hanh trinh vat hang cong van ((ban cao) OR (bao cao)).
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (doi chi)) sach - hanh trinh vat hang cong van ((ban cao) or (bao cao))*.