Perhaps you should try some spelling variations:
phap thong » phap phong, phap chong, pho thong
thuoc sach » hoc sach, nuoc sach, thuat sach
khau thong » khau thuong, khap thong, khau tong
khoa phap » khoa phau, khoan phai, khong phap
bai thuoc » ban thuoc, bai hoc, cay thuoc
sach khoa » bach khoa, sach nha, anh khoa
khoa khau » khoa kham, khoa phau, khoa chau
cach thu » cach thuc, cac thu, cach tu
cac khoa » cac khoan, cac khoi, dac khoa
sach bai » sach dao, cac bai, sach xa
su cach » su sach, tu cach, su cac
tuc cac » tu cac, tich cac
tu sach » thu sach, su sach, te sach

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 thu tuc cac khoa phap thong ) or ( tu sach bai thuoc sach khoa khau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su cach thu tuc cac khoa phap thong ) OR ( tu sach bai thuoc sach khoa khau thong )).
• Adding a wildcard symbol may retrieve word variants: (( su cach thu tuc cac khoa phap thong ) or ( tu sach bai thuoc sach khoa khau thong ))*.