Perhaps you should try some spelling variations:
cong doanh » cong danh, cong doan, dong doanh
tieu sach » chieu sach, dien sach, te sach
dung dung » ung dung, dung ung, dung dong
dung cong » dung trong
canh ban » can ban, canh dan, canh van
ban dung » van dung, dan dung, tan dung
nhan dau » phan dau, nhan dan, han dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu sach - canh ban dung dung cong doanh nhan dau~.
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - canh ban dung dung cong doanh nhan dau*.