Perhaps you should try some spelling variations:
tham thuoc » pham thuoc, tham thuc, nha thuoc
thuoc sach » hoc sach, nuoc sach, thuat sach
khau thong » khau thuong, khap thong, khau tong
sach tham » sach nha
sach khoa » bach khoa, sach nha, anh khoa
khoa khau » khoa kham, khoa phau, khoa chau
canh khoa » anh khoa, xanh khoa, doanh khoa
pho thong » he thong
sach tai » sach bai, sach dao, sach xa
thu canh » thuc hanh, thu cong, thu ban
khoa pho » khoa phu, khoa khoa, khoa phau
so sach » so sanh, bo sach, co sach
tai thu » thi thu, tai khu, tai thi

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 khau thong ) or ( so sach tai thu canh khoa pho thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( so sach tham thuoc sach khoa khau thong ) OR ( so sach tai thu canh khoa pho thong )).
• Adding a wildcard symbol may retrieve word variants: (( so sach tham thuoc sach khoa khau thong ) or ( so sach tai thu canh khoa pho thong ))*.