Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
chieu sach » chinh sach, chiet tach, chieu sang
thuc phung » thuc chung, thuc nhung, thu phuong
phung cong » nhung cong, phong cong, nhung chong
tinh nhan » trinh nhan, tinh than, minh nhan
nhan thuc » nhan luc, dan thuc, toan thuc
cong than » cong thanh, cong thang, cong tan
phan cac » phan dau, phan lap, phan van

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu tinh) or (chieu sach)) - tinh nhan thuc phung cong than ((phan cac) or (nhan cach))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu tinh) OR (chieu sach)) - tinh nhan thuc phung cong than ((phan cac) OR (nhan cach)).
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu tinh) or (chieu sach)) - tinh nhan thuc phung cong than ((phan cac) or (nhan cach))*.