Perhaps you should try some spelling variations:
phau thong » phap thong, khau thong, phan thong
hanh khoa » hang khoa, anh khoa, hanh hoa
pho thong » he thong
thuc toan » thuc trang, thuat toan, thuc thanh
khoa phau » hoa phan, khoa kham, khoa than
sach bai » cac bai, sach xa
bai thuc » bai thuoc, bao thuc, dai thuc
khoa pho » khoa phu, khoa khoa, khoa hoc
sach dao » lanh dao
dao thuc » dan thuc, dao tuc, do thuc
tu sach » thu sach, su sach, tu cach
te sach » toc sach

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 bai thuc hanh khoa pho thong ) or ( te sach dao thuc toan khoa phau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach bai thuc hanh khoa pho thong ) OR ( te sach dao thuc toan khoa phau thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach bai thuc hanh khoa pho thong ) or ( te sach dao thuc toan khoa phau thong ))*.