Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh nhan
lam thuoc » nam thuoc, am thuc, cay thuoc
doanh ban » doanh bat, doanh nhan, doanh luan
hieu van » hieu va, thien van, lieu va
thuoc ma » hoc ma, duoc ma
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
van lam » van nam
cua tre » cua te, cuu tre, cua triet
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky lang xa hoi. hieu van lam thuoc ma ((doanh van) OR (doanh ban)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky lang xa hoi. hieu van lam thuoc ma ((doanh van) OR (doanh ban)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sac ky lang xa hoi. hieu van lam thuoc ma ((doanh van) OR (doanh ban)) cua tre*.