Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
ban hanh » ban hang
va thong » va thuong, va phuong, he thong
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 - ban hanh va thong cong manh toan ban~.
• Adding a wildcard symbol may retrieve word variants: ((doi chi) or (toc thieu)) sach - ban hanh va thong cong manh toan ban*.