Perhaps you should try some spelling variations:
phan thuc » nhan thuc, phap thuc, pham thuc
cua triet » cua viet, su triet, va triet
qua phan » cua phan, qua than, quang phan
thuc ban » thuoc ban, thuc dan, thu ban
ban hanh » ban hang
hanh tai » thanh tai, hang tai, han tai
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
ky mang » ky nang, ke mang, ky dang
may hoi » may thoi, tay hoi, mai hoi
tai cua » thai cua, tai cuc, tri cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky mang may hoi. hieu qua phan thuc ban hanh tai cua triet~.
• Adding a wildcard symbol may retrieve word variants: tu sach ky mang may hoi. hieu qua phan thuc ban hanh tai cua triet*.