Perhaps you should try some spelling variations:
phau thong » phap thong, khau thong, phan thong
khap thong » phap thong, khau thong, khac thuong
ban thuoc » dang thuoc, cay thuoc, nam thuoc
thuoc dan » thuoc dang, thuc dan, thuoc ban
khoa phau » hoa phan, khoa kham, khoa than
khoa khap » khoa kham, khoa khac, kho khan
sach ban » sach bai, sach han, sach bac
dan khoa » dang khoa, da khoa, san khoa
sach tai » sach bai, sach tham, sach dao
cac khoa » cac khoan, cac khoi, dac khoa
tu sach » thu sach, su sach, tu cach
te sach » toc sach
tai hoc » thai hoc, dai hoc, bai hoc
hoc cac » hoc cao

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 ban thuoc dan khoa phau thong ) or ( te sach tai hoc cac khoa khap thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach ban thuoc dan khoa phau thong ) OR ( te sach tai hoc cac khoa khap thong ))*.