Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
cham tuc » nham thuc, pham thuc, tham thuc
van cham » van chat, van tham, va cham
hieu van » hieu va, thien van, lieu va
va hanh » van hanh, va thanh, va danh
tu sach » thu sach, su sach, te sach
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
tuc va » thuc va, truc va, tuc xa
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) or (toc sach)) ky ((nang xa) or (lang xa)) hoi. hieu van cham tuc va hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (toc sach)) ky ((nang xa) OR (lang xa)) hoi. hieu van cham tuc va hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (toc sach)) ky ((nang xa) or (lang xa)) hoi. hieu van cham tuc va hanh vi cua triet*.