Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thong cong » trong cong, tong cong, thong thong
trung hoc » trung quoc
ho chieu » theo chieu, hoc thieu, doi chieu
trung va » truong va, trang va, trung tam
trung ha » trung tam, trung cap
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan 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 ((trung va) or (((trung ha) OR (trung hoc)))) thong cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((trung va) OR (((trung ha) OR (trung hoc)))) thong cong dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh ((trung va) or (((trung ha) OR (trung hoc)))) thong cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((trung va) or (((trung ha) OR (trung hoc)))) thong cong dan toan cao*.