Perhaps you should try some spelling variations:
doanh luan » doanh nhan
tu sach » thu sach, su sach, te sach
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
cua tre » cuu tre, cua triet, dua tren
cac xuc » cam xuc, cac nuoc, chat xuc
sach ky » sac ky, sach y, sach ty
xuc va » duc va, tuc va, luc va
ve cac » va cac, vien cac
cua te » cua tu

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