Perhaps you should try some spelling variations:
khan thong » khap thong, khau thong, nhan thong
thuoc cach » thuoc sach, thuc cach, truoc cach
phau thong » phap thong, khau thong, phan thong
cach thuc » anh thuc, cac thu
thuc thuc » hoc thuc
thuc benh » thu benh, thuc ben, chua benh
hanh khoa » hang khoa, anh khoa, hanh hoa
khoa phau » hoa phan, khoa kham, khoa than
benh kho » benh khong, benh phoi, benh hoc
kho khan » khoa kham, khoa than
cach thi » cach thoi, cac thi, cach thien
thi thuc » thai thuc, thi thu, thi thuy

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( thuoc cach thuc thuc benh kho khan thong ) or ( cuoc cach thi thuc hanh khoa phau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thuoc cach thuc thuc benh kho khan thong ) OR ( cuoc cach thi thuc hanh khoa phau thong )).
• Adding a wildcard symbol may retrieve word variants: (( thuoc cach thuc thuc benh kho khan thong ) or ( cuoc cach thi thuc hanh khoa phau thong ))*.