Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
canh trinh » canh tranh, hanh trinh, canh tinh
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, ho chieu, hoc hien
luan phan » luan van, luan hoan
trinh va » trinh van, trinh vat, trinh ve
van phan » van phong, van thanh, van ban

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 sach - canh trinh va nhung cong ((van phan) or (luan phan)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - canh trinh va nhung cong ((van phan) OR (luan phan)) tu.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - canh trinh va nhung cong ((van phan) or (luan phan)) tu*.