Perhaps you should try some spelling variations:
khau thuong » khac thuong, khai thuong, khau thong
khoan khau » khoanh khac, khoa kham, khoa phau
thuc thong » thuc trong, thuc khong, thuy thong
thu thuoc » tu thuoc, thu thuc, tru thuoc
thuoc dac » thuoc dang, thuoc sach, thuc dan
sach tri » sach tai, sach tren, sach truc
sanh thu » sach thu, san thu, doanh thu
hoc thuc » hoc huu
tu sach » thu sach, su sach, te sach
tue cac » tu cac, tuc cac, te cac
so sanh » do sanh
dac hoc » dai hoc, dan hoc, day hoc

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 tue cac khoan khau thuong ) or ( so sanh thu thuoc dac hoc thuc thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach tri tue cac khoan khau thuong ) OR ( so sanh thu thuoc dac hoc thuc thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach tri tue cac khoan khau thuong ) or ( so sanh thu thuoc dac hoc thuc thong ))*.