Perhaps you should try some spelling variations:
doanh vang » doanh van, doanh sang, doanh quang
sach tru » sach truc, sach thu, sach tu
va doanh » van doanh, vay doanh, va danh
vang cua » mang cua, hang cua, tang cua
nang xa » nang x, lang xa, nang ma
qua cac » cua cac
cac luc » cau luc, coc luc, cac nuoc
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: toc ((sach tru) or (sach thieu)) nang xa hoi. hieu qua cac luc va doanh vang cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach tru) OR (sach thieu)) nang xa hoi. hieu qua cac luc va doanh vang cua te.
• Adding a wildcard symbol may retrieve word variants: toc ((sach tru) or (sach thieu)) nang xa hoi. hieu qua cac luc va doanh vang cua te*.