Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh vai » thanh hai, thanh van, thanh tai
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
ty dang » ty xang, ky dang, ty dong
ty hang » ly hang, ty xang, thi hang
van cac » van hac, van cau, van bac
cac cuc » cac cuoc, cac cua, cac nuoc
cuc ban » cua ban, cac ban, cuu ban
vai cua » dai cua, hai cua, lai 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 ((ty dang) OR (ty hang)) xa hoi. hieu van cac cuc ban thanh vai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ty dang) OR (ty hang)) xa hoi. hieu van cac cuc ban thanh vai cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty dang) OR (ty hang)) xa hoi. hieu van cac cuc ban thanh vai cua triet*.