Perhaps you should try some spelling variations:
cham xuc » cam xuc, chat xuc, cham soc
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
va hanh » van hanh, va thanh, dao hanh
va danh » va dinh, va dan, dia danh
ma hoi » mai hoi, xa hoi, ma hoa
thiet » thieu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ma hoi. hieu vu cham xuc ((((va hanh) OR (ban hanh))) OR (va danh)) tri va thiet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang ma hoi. hieu vu cham xuc ((((va hanh) OR (ban hanh))) or (va danh)) tri va thiet~".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ma hoi. hieu vu cham xuc ((((va hanh) OR (ban hanh))) or (va danh)) tri va thiet*.