Perhaps you should try some spelling variations:
khoan phap » khoan phai, khoa phau, han phap
khau thong » khau thuong, khap thong, khau tong
phap thong » phap phong, phap chong, pho thong
sach nham » sach nha, sach tham, sach han
nham thu » nham thuc, nam thu, pham thu
thu tich » chu tich, chu thich, thue tinh
sach dai » sach dao, sach bai, sach dat
dai thua » dai thu, dai thuc, dai cua
thua cac » thuat cam, thuan cam, thuat cao
tu sach » thu sach, su sach, te sach
tich ha » tich ham, tich hat, tich hoa
ha khau » han khau, ha chau, nhap khau

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 nham thu tich ha khau thong ) or ( tu sach dai thua cac khoan phap thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach nham thu tich ha khau thong ) OR ( tu sach dai thua cac khoan phap thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach nham thu tich ha khau thong ) or ( tu sach dai thua cac khoan phap thong ))*.