Perhaps you should try some spelling variations:
dao thuoc » cao thuoc, tao thuoc, dang thuoc
thuoc ban » thuoc tan, thuoc dang, thu ban
cach thuc » anh thuc, cac thu
bang khoa » hang khoa, dang khoa, vang khoa
sanh dao » lanh dao, sach dao, hanh dao
ban khoa » san khoa, van khoa, ba khoa
khoa pho » khoa phu, khoa khoa, khoa phau
thuc hoc » phuc hoc, thu hoc, thuc uoc
hoc bang » hoc bong, hoc tang, hoc dan
so sanh » do sanh
su cach » su sach, tu cach, su cac
khoa he » hoa he, khoa hoc, khong he

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( so sanh dao thuoc ban khoa pho thong ) or ( su cach thuc hoc bang khoa he thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( so sanh dao thuoc ban khoa pho thong ) OR ( su cach thuc hoc bang khoa he thong ))*.