Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
hanh tranh » canh tranh, hanh trinh, hanh trang
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than cap » khan cap, thanh lap, thanh cac
cua van » cua ban, cua vat, cua can
cua dan » cua dang, cua ban, ca dan

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 sach) or (chieu sang)) - hanh tranh ((cua van) OR (cua dan)) cong tan than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chieu sang)) - hanh tranh ((cua van) OR (cua dan)) cong tan than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (chieu sang)) - hanh tranh ((cua van) OR (cua dan)) cong tan than cap".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chieu sang)) - hanh tranh ((cua van) OR (cua dan)) cong tan than cap*.