Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thang long » thanh cong
lieu tinh » trieu tinh, diep tinh, bien tinh
hang nong » han tong
hanh ban » thanh ban, hang ban, hanh san
san than » sang than, san thanh, ban than
than cau » toan cau, phan cau, than cap
ban cua » ban quan

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)) - hanh ban cua ((hang nong) OR (thang long)) san than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (lieu tinh)) - hanh ban cua ((hang nong) OR (thang long)) san than cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (lieu tinh)) - hanh ban cua ((hang nong) OR (thang long)) san than cau*".