Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
doanh gia » doanh giao, doanh giai, danh gia
van doanh » toan doanh, van dong, van thanh
cau tren » cu tren, dau tren, ca tren
cac dac » cac dan, cac dai, cac bac
gia cau » giua cau, giay cau, gia cam
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
cac duc » cac du, cao duc, cac nuoc
x hoi » xa hoi, o hoi, x ho

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