Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
cham xuc » cam xuc, chat xuc, cham soc
sang ma » tang ma, nang ma, sang tao
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
sach ky » sac ky, sach y, sach ty
va hanh » van hanh, va thanh, va danh
va dinh » van dinh, va kinh, va tinh
ky sang » ky nang, ky dang, ky tang
su sach » so sach, vu sach
ma hoi » mai hoi, xa hoi, ma hoa
tai su » tai so, tai tu, lai su

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky sang ma hoi. hieu ve cham xuc ((va hanh) or (va dinh)) tai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky sang ma hoi. hieu ve cham xuc ((va hanh) OR (va dinh)) tai su triet.
• Adding a wildcard symbol may retrieve word variants: su sach ky sang ma hoi. hieu ve cham xuc ((va hanh) or (va dinh)) tai su triet*.