Perhaps you should try some spelling variations:
khoan phap » khoan phai, khoa phau, han phap
phap thong » phap phong, phap chong, pho thong
thuat sach » thuat lanh, thuat san
phau thong » khau thong, phan thong, phan thuong
sach tren » sach tien, sach tranh
tren thuc » trien thuc, tron thuc, trinh thuc
bai thuat » giai thuat, bai thuyet, ki thuat
thuc cac » thuc cach, tuc cac, phuc cac
sach bai » sach dao, cac bai, sach xa
nha phau » nha phat, nhap khau, khoa phau
te sach » toc sach
tu sach » thu sach, su sach, tu cach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( te sach tren thuc cac khoan phap thong ) or ( tu sach bai thuat sach nha phau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te sach tren thuc cac khoan phap thong ) OR ( tu sach bai thuat sach nha phau thong )).
• Adding a wildcard symbol may retrieve word variants: (( te sach tren thuc cac khoan phap thong ) or ( tu sach bai thuat sach nha phau thong ))*.