Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
sach thi » sach thu, sach tai, sach thieu
thi hang » thi hanh, thi nang, thi hong
hang mai » hoang mai, hang tai, hang hai
danh vai » danh sai, danh va, dang van
mai hoi » mai khoi, dai hoi, lai hoi
hieu va » lieu va, hieu qua
cao duc » dao duc, cao suc, giao duc
va cao » va cac, va co, va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach thi hang mai hoi. hieu va cao duc va ((danh vai) or (doanh van)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach thi hang mai hoi. hieu va cao duc va ((danh vai) OR (doanh van)) cua triet.
• Adding a wildcard symbol may retrieve word variants: toc sach thi hang mai hoi. hieu va cao duc va ((danh vai) or (doanh van)) cua triet*.