Perhaps you should try some spelling variations:
khoan phap » khoan phai, khoa phau, han phap
phap thong » phap phong, phap chong, pho thong
tren thuoc » trien thuoc, tren thuc, trung thuoc
khoa thong » hoa thong, thoai thong, pho thong
sach tren » sach tien, sach tranh
thuoc anh » thuoc thanh, thuoc dang, thuoc sach
anh khoa » doanh khoa, hang khoa
tu sach » thu sach, te sach, tu cach
nha tuc » nha tu, nha thuoc, nham thuc
tuc cac » tu cac, tich cac
su sach » so sach, vu 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 nha tuc cac khoan phap thong ) or ( su sach tren thuoc anh khoa thong thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach nha tuc cac khoan phap thong ) OR ( su sach tren thuoc anh khoa thong thong ))*.