Perhaps you should try some spelling variations:
bach khoan » bach khoa, cac khoan, bach hoa
khoan phai » khong phai, khoa phau, khoan hoi
phai thong » phap thong, phai tuong, phan thong
tham thuoc » pham thuoc, tham thuc, nha thuoc
thuoc sach » hoc sach, nuoc sach, thuat sach
sach khang » bach khang, sach han, sach nang
khang phap » khong phap, chong phap, hang phat
thuc bach » truc bach, thuc cach, thuc hanh
sach tham » sach nha
phap cong » phan cong, pham cong, phap phong
sach tri » sach tai, sach tren, sach truc
tri thuc » tri tue
su sach » so sach, vu sach
tu sach » thu sach, te sach, tu cach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( su sach tri thuc bach khoan phai thong ) or ( tu sach tham thuoc sach khang phap cong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su sach tri thuc bach khoan phai thong ) OR ( tu sach tham thuoc sach khang phap cong )).
• Adding a wildcard symbol may retrieve word variants: (( su sach tri thuc bach khoan phai thong ) or ( tu sach tham thuoc sach khang phap cong ))*.