Perhaps you should try some spelling variations:
doanh gia » doanh giao, doanh giai, danh gia
van doanh » toan doanh, van dong, van thanh
thu sach » tu sach, thuat sach, thuoc sach
su sach » so sach, vu sach
cac duc » cac du, cao duc, cac nuoc
gia cuu » gia cua, gia cuc, gian cua
cac dac » cac dan, cac dai, cac bac
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu va, hieu van
nang o » nang co, nang ho, nang ro
o hoi » co hoi, o hoc, o hai

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) or (thu sach)) ky nang o hoi. hieu ve ((cac duc) or (cac dac)) van doanh gia cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (thu sach)) ky nang o hoi. hieu ve ((cac duc) OR (cac dac)) van doanh gia cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thu sach)) ky nang o hoi. hieu ve ((cac duc) or (cac dac)) van doanh gia cuu tre*.