Perhaps you should try some spelling variations:
phap thong » phap phong, phap chong, pho thong
phau thong » khau thong, phan thong, phan thuong
cach thuc » anh thuc, cac thu
thuc thuc » hoc thuc
thuc dang » thuoc dang, thuc dan, thuc dung
dang khoa » dung khoa, hang khoa, dang khoi
khoa phap » khoan phai, khong phap, hoa phan
sach thay » sach tham, sach hay, hoach thay
thay nuoc » tham nuoc, tray nuoc, thoat nuoc
nuoc bach » nuoc sach, ngoc bich, cuoc cach
bach khoa » anh khoa
khoa phau » hoa phan, khoa kham, khoa than
toc sach » hoc sach, doc sach, thuoc sach
su cach » su sach, tu cach, su cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( su cach thuc thuc dang khoa phap thong ) or ( toc sach thay nuoc bach khoa phau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su cach thuc thuc dang khoa phap thong ) OR ( toc sach thay nuoc bach khoa phau thong ))*.