Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung dong » nhung don, nhung cong, nhung dung
ho chieu » theo chieu, hoc thieu, doi chieu
trung ve » trung va, trung vu, trung vo
trung vi » trung va, trung vu, trung vo
dong hoc » dong co, dong luc
phan cau » phan cac, phan tu, phan lap
phan dau » phan tu, hang dau

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 ve) or (trung vi)) nhung dong hoc ((phan cau) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((trung ve) OR (trung vi)) nhung dong hoc ((phan cau) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((trung ve) or (trung vi)) nhung dong hoc ((phan cau) or (phan dau))*.