Perhaps you should try some spelling variations:
tham thuoc » pham thuoc, tham thuc, nha thuoc
khoan than » khoan thanh, khoa than, khan than
than tuong » than thuong, thay tuong, nhan tuong
sach tham » sach nha
thuoc anh » thuoc thanh, thuoc dang, thuoc sach
pho thong » he thong
anh khoa » doanh khoa, hang khoa
khoa pho » khoa phu, khoa khoa, khoa phau
tu sach » thu sach, su sach, te sach
cac tai » cao tai, cac bai, cac dai
cuc cac » cua cac, cuu cac, tuc cac

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 anh khoa pho thong ) or ( tu cac tai cuc cac khoan than tuong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach tham thuoc anh khoa pho thong ) OR ( tu cac tai cuc cac khoan than tuong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach tham thuoc anh khoa pho thong ) or ( tu cac tai cuc cac khoan than tuong ))*.