Perhaps you should try some spelling variations:
doan thien » hoan thien, doan thi, toan thiet
va thanh » gia thanh, ban thanh, va tinh
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 » van hanh, va danh, ban hanh
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
vi doan » vi toan, voi doanh, thi doan
tu sach » thu sach, su sach, te 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: tu sach ky sang ma hoi. hieu ve cham xuc ((va hanh) or (va thanh)) vi doan thien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky sang ma hoi. hieu ve cham xuc ((va hanh) OR (va thanh)) vi doan thien.
• Adding a wildcard symbol may retrieve word variants: tu sach ky sang ma hoi. hieu ve cham xuc ((va hanh) or (va thanh)) vi doan thien*.