Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
van khang » van khanh, van thanh, van quang
thuat bao » thuat giao, thuat do, thuat o
thuat bai » thuyet bai, thuat xay
ho chieu » theo chieu, hoc thieu, doi chieu
nong dan » cong dan, nong san, nguong dan
va hang » van hang, va nang, va lang

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