Perhaps you should try some spelling variations:
voi doanh » von doanh, tri doanh, hoa doanh
doanh cua » doanh luan
hoc sach » hoc sinh, hoc cac, hoc anh
phat xuc » chat xuc, phat xuat, phap xu
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
xuc voi » xu voi
cua cua » cua chua, ca cua, qua cua
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang

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 (hoc sach)) y nang ma hoa. hieu va phat xuc voi doanh cua cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (hoc sach)) y nang ma hoa. hieu va phat xuc voi doanh cua cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (hoc sach)) y nang ma hoa. hieu va phat xuc voi doanh cua cua tre*.