Perhaps you should try some spelling variations:
ban doanh » van doanh, san doanh, ban danh
doanh va » doan va, doanh tai, doanh cua
cham duc » pham duc, cham soc, pham duy
tu sach » thu sach, te sach, tu cach
cua tre » cua te, cuu tre, cua triet
duc ban » duc tan, duc van, dua ban
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
ty nang » ky nang, ty xang, ty hang
su sach » so sach, vu sach
cua tuc » cua duc, cua tu, cua thuoc
x hoi » xa hoi, o hoi, x ho

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ty nang x hoi. hieu vu cham duc ban doanh va ((cua tre) OR (cua tuc))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) ty nang x hoi. hieu vu cham duc ban doanh va ((cua tre) or (cua tuc))~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) ty nang x hoi. hieu vu cham duc ban doanh va ((cua tre) or (cua tuc))*.