Perhaps you should try some spelling variations:
doanh thu » doanh tai
sach thu » sach thue, sach thieu, sach tham
thu xang » thu hang, thu bang, thu dang
su sach » so sach, vu sach
cua tre » cuu tre, cua triet, dua tren
dinh ve » dinh ket, dinh van
cam luc » cam xuc, cau luc
qua cam » qua cham, qua cac, qua ca
xang xa » lang xa, mang xa, ang xa
luc va » duc va, tuc va, loc va
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: su sach thu xang xa hoi. hieu qua cam luc va ((dinh ve) or (doanh thu)) ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thu xang xa hoi. hieu qua cam luc va ((dinh ve) OR (doanh thu)) ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: su sach thu xang xa hoi. hieu qua cam luc va ((dinh ve) or (doanh thu)) ((cua tre) or (cua te))*.