Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
van tham » van thanh, van tuan, van chat
tham xuc » tham nuoc, tham thuc, pham duc
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
va hanh » va thanh, va danh, ban hanh
vi cua » vai cua, di 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 lang xa hoi. hieu van tham xuc ((va hanh) or (van hanh)) vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky lang xa hoi. hieu van tham xuc ((va hanh) OR (van hanh)) vi cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky lang xa hoi. hieu van tham xuc ((va hanh) or (van hanh)) vi cua triet*.