Perhaps you should try some spelling variations:
doanh tren » doanh tien, doanh trong, dinh tren
doanh vien » doanh tien, doanh chien, thanh vien
thu sach » tu sach, thuat sach, thuoc sach
cac truc » cau truc, cac tru, cac trung
sach vu » sach va, sach tu, sach uu
vu nang » vuc nang, va nang, vu dang
nang xa » nang x, lang xa, nang ma
qua cac » cua cac
truc va » thuc va, thuc vat, trung va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach vu nang xa hoi. hieu qua cac truc va ((doanh vien) or (doanh tren)) cac tro~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach vu nang xa hoi. hieu qua cac truc va ((doanh vien) OR (doanh tren)) cac tro.
• Adding a wildcard symbol may retrieve word variants: thu sach vu nang xa hoi. hieu qua cac truc va ((doanh vien) or (doanh tren)) cac tro*.