Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, ho chieu, hoc hien
trinh van » trinh han, trinh quan, trinh toan
san ban » sang ban, van ban, can 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 - hanh trinh van ((nhung cong) or (trong cong)) thanh san ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh trinh van ((nhung cong) OR (trong cong)) thanh san ban.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh trinh van ((nhung cong) or (trong cong)) thanh san ban*.