Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
xanh hanh » danh thanh, ban hanh, van hanh
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan ban » van ban
doi chi » doi khi
hanh va » hang va, hanh vi

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chi) OR (toc thieu)) sach - xanh hanh va nhung cong van toan ban~.
• Adding a wildcard symbol may retrieve word variants: ((doi chi) or (toc thieu)) sach - xanh hanh va nhung cong van toan ban*.