Perhaps you should try some spelling variations:
cuc triet » cua triet, su triet, cac trieu
van hanh » van thanh, ban hanh, van anh
cham xuc » cam xuc, chat xuc, cham soc
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
sach ky » sac ky, sach y, sach ty
va hanh » va thanh, va danh, ban hanh
sang ma » tang ma, nang ma, sang tao
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

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 (van hanh))) or (va dinh)) tai cuc 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 (van hanh))) OR (va dinh)) tai cuc triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky sang ma hoi. hieu ve cham xuc ((((va hanh) OR (van hanh))) or (va dinh)) tai cuc triet".
• Adding a wildcard symbol may retrieve word variants: su sach ky sang ma hoi. hieu ve cham xuc ((((va hanh) OR (van hanh))) or (va dinh)) tai cuc triet*.