Perhaps you should try some spelling variations:
van doanh » toan doanh, van dong, van thanh
doanh va » doan va, doanh tai, doanh cua
tu sach » thu sach, su sach, te sach
ve cham » va cham, ve chat, vu cham
xuc van » duc van, luc van, vuc van
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
ve cam » ve cac, va cam, ve cai
ma hoi » mai hoi, xa hoi, ma hoa
va cua » va chua, via cua, ca cua

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 cam) or (ve cham)) xuc van doanh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky sang ma hoi. hieu ((ve cam) OR (ve cham)) xuc van doanh va cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky sang ma hoi. hieu ((ve cam) or (ve cham)) xuc van doanh va cua tre*.