Perhaps you should try some spelling variations:
vay doanh » van doanh, ly doanh, voi doanh
doanh van » doan van, doanh va, doanh ban
hieu van » thien van, lieu va, hieu ve
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
cac tuc » cac toc, cac tu, cac tac
tuc vay » tuc va, tu vay, tuc xay
van cua » vang cua, ban cua, dan cua
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ma hoi. ((hieu van) OR (hieu va)) cac tuc vay doanh van cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ma hoi. ((hieu van) OR (hieu va)) cac tuc vay doanh van cua tre*.