Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
truong van » truong va, truong dai, truong cao
nhung cong » dung cong, thong cong, hang cong
trung van » trung va, trung tuan, trung phan
trong van » trong cac
ho chieu » theo chieu, hoc thieu, doi chieu
cong san » cong tac
san than » sang than, san thanh, ban than
than cau » toan cau, phan cau, than cap

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 van) OR (trong van))) or (truong van)) nhung cong san than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((((trung van) OR (trong van))) OR (truong van)) nhung cong san than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh ((((trung van) OR (trong van))) or (truong van)) nhung cong san than cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((((trung van) OR (trong van))) or (truong van)) nhung cong san than cau*.