Perhaps you should try some spelling variations:
tranh chap » tranh cua, trinh chat
hang cong » dang cong, hang nong, bang cong
tran chau » tran huu
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
tranh va » tranh van, trang va, trinh va
cong dan » cong san, cong tan, huong dan
tran cao » toan cao, trang cho, tranh cac
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 chu sach - canh tranh va hang cong dan ((tran cao) or (((tran chau) or (tranh chap))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - canh tranh va hang cong dan ((tran cao) OR (((tran chau) OR (tranh chap)))).
• Adding a wildcard symbol may retrieve word variants: theo chu sach - canh tranh va hang cong dan ((tran cao) or (((tran chau) or (tranh chap))))*.