Perhaps you should try some spelling variations:
tham thuoc » pham thuoc, tham thuc, nha thuoc
thuoc sach » hoc sach, nuoc sach, thuat sach
sach khoan » cac khoan, bach khoa, sach han
khau thong » khau thuong, khap thong, khau tong
sach tham » sach nha
khoan hoi » khoan nhoi, khoa hoi, khoa hoc
hoi thong » hoi thuong, hoi trong, hoa thong
toan tran » thoan tran, tan tran, hoan tran
tran thuc » trang thuc, toan thuc, tran thuy
khoa khau » khoa kham, khoa phau, khoa chau
thuc anh » thuc hanh, thuy anh, thu anh
anh khoa » doanh khoa, hang khoa
tu sach » thu sach, su sach, te sach

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 tham thuoc sach khoan hoi thong ) or ( thuat toan tran thuc anh khoa khau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach tham thuoc sach khoan hoi thong ) OR ( thuat toan tran thuc anh khoa khau thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach tham thuoc sach khoan hoi thong ) or ( thuat toan tran thuc anh khoa khau thong ))*.