Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
cong thanh » dong thanh, cong trinh, truong thanh
truong va » truong dai, truong cao, truong dao
ho chieu » theo chieu, hoc thieu, doi chieu
trung ha » trung hoc, trung tam, trung cap
cong tan » cong tac, cong san, cong ty
khoa tap » khoa tai, khoa than, hoc tap

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