Perhaps you should try some spelling variations:
tham thuoc » pham thuoc, tham thuc, nha thuoc
thuoc sach » hoc sach, nuoc sach, thuat sach
khac thong » khac thuong, khac trong, khap thong
phap chong » phap phong, phap cong, pham hong
sach tham » sach nha
sach khoa » bach khoa, sach nha, anh khoa
khoa khac » khoa kham, khoanh khac, khoa hoc
hanh khoa » hang khoa, anh khoa, hanh hoa
khoa phap » khoa phau, khoan phai, khong phap
sach tri » sach tai, sach tren, sach truc
tri thuc » tri tue
so sach » so sanh, bo sach, co sach
te sach » toc sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( so sach tham thuoc sach khoa khac thong ) or ( te sach tri thuc hanh khoa phap chong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( so sach tham thuoc sach khoa khac thong ) OR ( te sach tri thuc hanh khoa phap chong )).
• Adding a wildcard symbol may retrieve word variants: (( so sach tham thuoc sach khoa khac thong ) or ( te sach tri thuc hanh khoa phap chong ))*.