Perhaps you should try some spelling variations:
vien thinh » tien thinh, vien thanh, viet thinh
thinh sach » chinh sach, tinh sach, sinh sach
hanh tranh » canh tranh, hanh trinh, hanh trang
cua hang » cua dang, cua nhung, cua ban
cong tac » cong ty
toan ban » van ban
toan cao » 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: vien thinh sach - hanh tranh ((cua hang) or (cua cong)) cong tac ((toan ban) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vien thinh sach - hanh tranh ((cua hang) OR (cua cong)) cong tac ((toan ban) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: vien thinh sach - hanh tranh ((cua hang) or (cua cong)) cong tac ((toan ban) or (toan cao))*.