Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
manh tung » manh hung, thanh tung
ban cong » bang cong, van cong, phan cong
cong dan » cong san, cong tan, huong dan
dan van » dang van, doan van, dao van

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - ((manh tung) or (hanh trinh)) cua ban cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - ((manh tung) OR (hanh trinh)) cua ban cong dan van ban.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - ((manh tung) or (hanh trinh)) cua ban cong dan van ban*.