Perhaps you should try some spelling variations:
tien doanh » trien doanh, lien doanh, toan doanh
doanh khoa » toan khoa
thi doanh » tri doanh, thi oanh, thi doan
phu thong » pho thong, phap thong, khau thong
sach tri » sach tai, sach tren, sach truc
khoa phu » khoa phau, khoa thu, hoa phu
hanh thu » khanh thu, nhanh thu, thanh thu
thu tien » thuc tien, thu tieng, thuy tien
tu sach » thu sach, su sach, te sach
tri thi » tri tai, tai thi, thi thi
tu hanh » du hanh, lu hanh, thuc hanh

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 tri thi doanh khoa phu thong ) or ( tu hanh thu tien doanh khoa phu thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach tri thi doanh khoa phu thong ) OR ( tu hanh thu tien doanh khoa phu thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach tri thi doanh khoa phu thong ) or ( tu hanh thu tien doanh khoa phu thong ))*.