Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh dai » hanh tai, hanh dao, vanh dai
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
vu cham » va cham, vu kham, tu cham
va chat » van chat, cao chat, hoa chat
va hanh » van hanh, va thanh, va danh
tuc va » thuc va, truc va, tuc xa
x hoi » xa hoi, o hoi, x ho

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 nang x hoi. hieu ((vu cham) or (((va chat) OR (va phat)))) tuc va hanh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. hieu ((vu cham) OR (((va chat) OR (va phat)))) tuc va hanh dai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang x hoi. hieu ((vu cham) or (((va chat) OR (va phat)))) tuc va hanh dai cua triet*".