Perhaps you should try some spelling variations:
van doanh » toan doanh, van dong, van thanh
hoa doanh » toan doanh, hoa dan
xa doanh » va doanh, vay doanh, cac doanh
vang cua » mang cua, hang cua, tang cua
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
cac toc » cac toi, cac nuoc, cac thoi
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang ma hoa. hieu ve cac toc ((((xa doanh) or (hoa doanh))) or (van doanh)) vang cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ma hoa. hieu ve cac toc ((((xa doanh) OR (hoa doanh))) OR (van doanh)) vang cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ma hoa. hieu ve cac toc ((((xa doanh) or (hoa doanh))) or (van doanh)) vang cua tre*.