Perhaps you should try some spelling variations:
trinh vat » trinh van, trinh luat, sinh vat
hang cong » dang cong, hang nong, bang cong
cong dang » cong dong, cong dan, cong dung
tran chau » tranh chap, tran huu
chu sach » cau sach, thu sach, chieu sach
trinh va » trinh van, trinh ve, trinh vi
tran cao » toan cao, trang cho, tranh cac
cho chu » cho thue

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

• Performing a fuzzy search may retrieve terms with similar spellings: cho chu sach - hanh ((trinh va) OR (trinh vat)) hang cong dang ((tran cao) or (tran chau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cho chu sach - hanh ((trinh va) OR (trinh vat)) hang cong dang ((tran cao) OR (tran chau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "cho chu sach - hanh ((trinh va) OR (trinh vat)) hang cong dang ((tran cao) or (tran chau))".
• Adding a wildcard symbol may retrieve word variants: cho chu sach - hanh ((trinh va) OR (trinh vat)) hang cong dang ((tran cao) or (tran chau))*.