Perhaps you should try some spelling variations:
doanh khoan » doanh khoa, doanh hoan, doanh nhan
tieu doanh » tieu danh, trien doanh, dieu danh
kham thong » khap thong, khau thong, pham thuong
khoan phai » khong phai, khoa phau, khoan hoi
phai thong » phap thong, phai tuong, phan thong
khoa kham » kho khan, khoa than
sach tai » sach bai, sach tham, sach xa
anh khoa » doanh khoa, hang khoa
toc sach » hoc sach, doc sach, thuoc sach
sach dao » lanh dao
dao tieu » dao hieu, day tieu, dao tien
tu sach » thu sach, su sach, te sach
tai tue » tri tue, tai tu, tai tieu
tue anh » tu anh, tuyet anh, tuan anh

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu sach tai tue anh khoa kham thong ) or ( toc sach dao tieu doanh khoan phai thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach tai tue anh khoa kham thong ) OR ( toc sach dao tieu doanh khoan phai thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach tai tue anh khoa kham thong ) or ( toc sach dao tieu doanh khoan phai thong ))*.