Perhaps you should try some spelling variations:
chua tri » chu tri, chua trieu, chua tivi
chua tre » cua tre, chua trieu, cho tre
thu sach » thuat sach, thuoc sach, thu hoach
cham xuc » cam xuc, chat xuc, cham soc
va hanh » van hanh, va thanh, va danh
ve cham » va cham, ve chat, vu cham
tu sach » su sach, te sach, tu cach
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
hieu ve » hieu va, hieu van
ma hoi » mai hoi, xa hoi, ma hoa
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) or (thu sach)) ky sang ma hoi. hieu ve cham xuc va hanh vi ((chua tre) OR (chua tri))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky sang ma hoi. hieu ve cham xuc va hanh vi ((chua tre) OR (chua tri)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) ky sang ma hoi. hieu ve cham xuc va hanh vi ((chua tre) OR (chua tri))".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky sang ma hoi. hieu ve cham xuc va hanh vi ((chua tre) OR (chua tri))*.