Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hanh tranh » canh tranh, hanh trang, lanh tranh
hieu sach » chieu sach, hieu cach, dien sach
cua nhung » va nhung
thanh lap » thanh san, phan lap, thanh hai
doc hieu » toc thieu, hoc thieu, hoc hien
cong san » cong tac

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu sach - ((hanh tranh) or (hanh trinh)) cua nhung ((cong dong) or (cong san)) thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sach - ((hanh tranh) OR (hanh trinh)) cua nhung ((cong dong) OR (cong san)) thanh lap.
• Adding a wildcard symbol may retrieve word variants: doc hieu sach - ((hanh tranh) or (hanh trinh)) cua nhung ((cong dong) or (cong san)) thanh lap*.