Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
va phuong » va thuong, cac phuong
ho chieu » theo chieu, hoc thieu, doi chieu
va thong » va thuong, he thong, va cong
cong dan » cong san, cong tan, huong dan
phan dau » phan tu, hang dau
phan cac » nhan cach, phan lap, phan van

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 - thanh trung ((va thong) OR (va phuong)) cong dan ((phan dau) or (phan cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh trung ((va thong) OR (va phuong)) cong dan ((phan dau) OR (phan cac)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh trung ((va thong) OR (va phuong)) cong dan ((phan dau) or (phan cac))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh trung ((va thong) OR (va phuong)) cong dan ((phan dau) or (phan cac))*.