Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cua triet » cua viet, su triet, va triet
sang tao » hang tai
tu sach » thu sach, su sach, te sach
va hanh » van hanh, va thanh, va danh
sach ky » sac ky, sach y, sach ty
cac duc » cac du, cao duc, cac dac
hieu ve » hieu va, hieu van
tao hoi » tao khoi, tao boi, tay hoi
ky sang » ky nang, ky dang, ky tang
cuu tre » cua tre, cau tren, cau treo
ve cac » va cac, vien cac

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 sang tao hoi. hieu ve cac duc ((va hanh) or (ban thanh)) lai ((cua triet) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky sang tao hoi. hieu ve cac duc ((va hanh) OR (ban thanh)) lai ((cua triet) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky sang tao hoi. hieu ve cac duc ((va hanh) or (ban thanh)) lai ((cua triet) or (cuu tre))*.