Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
toan thuc » toan hoc, dan thuc
nhan thuc » nhan luc, dan thuc
hung cong » nhung cong, hung cuong, phung cong
cong than » cong thanh, cong thang, cong tan
ho chieu » theo chieu, hoc thieu, mot chieu
phan cac » nhan cach, phan dau, phan van
phan lap » phan 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 - tinh ((toan thuc) or (nhan thuc)) hung cong than ((phan cac) or (phan lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - tinh ((toan thuc) OR (nhan thuc)) hung cong than ((phan cac) OR (phan lap)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - tinh ((toan thuc) or (nhan thuc)) hung cong than ((phan cac) or (phan lap))*.