Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
tieu sach » chieu sach, dien sach, te sach
hanh hang » thanh hang, hang hang, hanh han
hang doan » hang doanh, hanh doanh, quang doan
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than ban » thanh ban, toan ban, than man

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 - hanh hang doan phuong cong tan than ban~.
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - hanh hang doan phuong cong tan than ban*.