Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
lieu tinh » trieu tinh, diep tinh, bien tinh
dung cong » dung trong
anh mang » hanh mang, anh bang, anh dang
mang cua » manh cua, dung cua, ban cua
cua dung » cua dang, cua dong, qua dung
cong tan » cong tac, cong san, cong thanh
than cap » thanh lap, thanh cac, than cua
khan cap » khan ap, khoan cam, phan cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) or (lieu tinh)) - anh mang cua dung cong tan ((than cap) OR (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (lieu tinh)) - anh mang cua dung cong tan ((than cap) OR (khan cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (lieu tinh)) - anh mang cua dung cong tan ((than cap) OR (khan cap))".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (lieu tinh)) - anh mang cua dung cong tan ((than cap) OR (khan cap))*.