Perhaps you should try some spelling variations:
chet triet » chuyen triet, thuyet triet
hanh cao » hanh cac, hanh cat, hanh cad
cao chet » cao chat, cai chet, chai chet
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
van bao » van dao
va hanh » van hanh, va thanh, va danh
xuc va » duc va, tuc va, luc va

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 tang xa hoi. hieu ((van bao) or (van ban)) xuc va hanh cao chet triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky tang xa hoi. hieu ((van bao) OR (van ban)) xuc va hanh cao chet triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky tang xa hoi. hieu ((van bao) or (van ban)) xuc va hanh cao chet triet*.