Perhaps you should try some spelling variations:
tranh van » tran van, trinh van, thanh van
hang cong » dang cong, hang nong, bang cong
chinh can » chinh ca, chinh ban, chinh ngan
chinh cau » chinh chau, chinh ca, chinh tai
ho chieu » theo chieu, hoc thieu, doi chieu
van hang » van khang, van hoang, van thang
cong san » cong tac
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (doi chi)) sach - canh tranh van hang cong san ((chinh can) or (chinh cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chi)) sach - canh tranh van hang cong san ((chinh can) OR (chinh cau)).
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doi chi)) sach - canh tranh van hang cong san ((chinh can) or (chinh cau))*.