Perhaps you should try some spelling variations:
doanh khong » doanh thuong, doanh khoa, doanh chung
truc doanh » tri doanh, trai doanh, muc doanh
dao thuoc » cao thuoc, tao thuoc, dang thuoc
thuoc ban » thuoc tan, thuoc dang, thu ban
hoc thong » hoc thuong, hoc trong, hoc hong
sach thi » sach thu, sach tai, sach thieu
thi truc » thi trac, thi thuc, phim truc
khong he » khong khi, hong ha, khong _
thu lanh » thu canh, thi lanh, thu anh
ban khoa » san khoa, van khoa, ba khoa
khoa hoc » hoa hoc
tu sach » thu sach, su sach, te sach

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 thi truc doanh khong he thong ) or ( thu lanh dao thuoc ban khoa hoc thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach thi truc doanh khong he thong ) OR ( thu lanh dao thuoc ban khoa hoc thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach thi truc doanh khong he thong ) or ( thu lanh dao thuoc ban khoa hoc thong ))*.