Perhaps you should try some spelling variations:
cau triet » cau trieu, su triet, cua triet
van thanh » ban thanh, van tuan
hieu van » hieu va, thien van, lieu va
van hanh » ban hanh, van anh, van ban
cham xuc » cam xuc, chat xuc, cham soc
van cham » van chat, van tham, va cham
sach ky » sac ky, sach y, sach ty
nang xa » lang xa, nang ma, mang xa
tu sach » thu sach, su sach, te sach
vi cau » va cau, ve cau, di cau

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 xa) or (nang x)) hoi. hieu van cham xuc ((van hanh) or (van thanh)) vi cau triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((nang xa) OR (nang x)) hoi. hieu van cham xuc ((van hanh) OR (van thanh)) vi cau triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((nang xa) or (nang x)) hoi. hieu van cham xuc ((van hanh) or (van thanh)) vi cau triet*.