Perhaps you should try some spelling variations:
va doanh » van doanh, vay doanh, va danh
dung cua » dung luan, dung cho
vang cua » mang cua, hang cua, tang cua
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu van
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, luc va
ma hoi » mai hoi, xa hoi, ma hoa

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 y nang ma hoi. ((hieu ve) OR (hieu va)) cam xuc va doanh ((vang cua) OR (dung cua)) te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang ma hoi. ((hieu ve) OR (hieu va)) cam xuc va doanh ((vang cua) or (dung cua)) te~".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ma hoi. ((hieu ve) OR (hieu va)) cam xuc va doanh ((vang cua) or (dung cua)) te*.