Perhaps you should try some spelling variations:
hanh trinh » hanh chinh
chong cong » cong cong, thong cong, cuong cong
hoc thieu » toc thieu, hoc hien
cua chong » cua cong, cua chung, cua khong
doc hieu » toc thieu, hoc hien
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan cao » toan ban, toan tap

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) or (hoc thieu)) sach - ((hanh trinh) or (canh tranh)) cua chong cong van toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (hoc thieu)) sach - ((hanh trinh) OR (canh tranh)) cua chong cong van toan cao.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (hoc thieu)) sach - ((hanh trinh) or (canh tranh)) cua chong cong van toan cao*.