Perhaps you should try some spelling variations:
kham thong » khap thong, khau thong, pham thuong
thuoc sach » hoc sach, nuoc sach, thuat sach
khoa kham » kho khan, khoa than
tin thuoc » tin thuong, tin hoc, ban thuoc
sach khoa » bach khoa, sach nha, anh khoa
pho thong » he thong
thu tiep » thu tien, thu tieu, thuc tien
can khoa » san khoa, con khoa, van khoa
cach tin » cach thien, cach bien, sach tien
khoa pho » khoa phu, khoa khoa, khoa phau
can thu » can thuc, van thu, can thi
tu cach » tu cac
su can » su van, su cao, tu can

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( su can thu tiep can khoa kham thong ) or ( tu cach tin thuoc sach khoa pho thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su can thu tiep can khoa kham thong ) OR ( tu cach tin thuoc sach khoa pho thong )).
• Adding a wildcard symbol may retrieve word variants: (( su can thu tiep can khoa kham thong ) or ( tu cach tin thuoc sach khoa pho thong ))*.