Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
ban thanh » ban hanh, ban hang
cua triet » cua viet, su triet, va triet
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, lieu va
van bay » van ban, van bao, van bac
bay dia » ban dia, tay dia
vai cua » dai cua, hai cua, lai cua
y nang » ly nang, v nang, may nang
ma hoi » mai hoi, xa hoi, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((y nang) OR (ky nang)) ((ma hoi) or (ma hoa)). hieu van bay dia ban thanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((y nang) OR (ky nang)) ((ma hoi) OR (ma hoa)). hieu van bay dia ban thanh vai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((y nang) OR (ky nang)) ((ma hoi) or (ma hoa)). hieu van bay dia ban thanh vai cua triet*".