Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
trung hoc » trung quoc
hoc nhung » hoa nhung, hon nhung, nuoc nhung
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
than cao » thai cao, than cap, than sao
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 hoc nhung ((cong dan) or (cong tan)) ((than cao) OR (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh trung hoc nhung ((cong dan) OR (cong tan)) ((than cao) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh trung hoc nhung ((cong dan) or (cong tan)) ((than cao) OR (toan cao))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh trung hoc nhung ((cong dan) or (cong tan)) ((than cao) OR (toan cao))*.