Perhaps you should try some spelling variations:
kham thuong » pham thuong, khac thuong, khai thuong
doanh khoa » toan khoa
hoc phuong » hoc thuong, cac phuong
khoa kham » kho khan, khoa than
sach tien » sach tren, sach thieu
sach bai » sach dao, cac bai, sach xa
ty doanh » ly doanh, te doanh, tri doanh
tien thu » tieu thu, kien thuc, trien thi
thu hang » thi hang, thuc hanh, thu huong
hang hoa » hang khoa, thanh hoa, hang va
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
bai ty » bai tu

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 bai ty doanh khoa kham thuong ) or ( su sach tien thu hang hoa hoc phuong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach bai ty doanh khoa kham thuong ) OR ( su sach tien thu hang hoa hoc phuong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach bai ty doanh khoa kham thuong ) or ( su sach tien thu hang hoa hoc phuong ))*.