Perhaps you should try some spelling variations:
phap thong » phap phong, phap chong, pho thong
thuoc sach » hoc sach, nuoc sach, thuat sach
khoa thong » hoa thong, thoai thong, pho thong
duoc sach » nuoc sach, doc sach, quoc sach
sach khoa » bach khoa, sach nha, anh khoa
khoa phap » khoa phau, khoan phai, khong phap
bai thuoc » ban thuoc, bai hoc, cay thuoc
sach tao » sach bao, sach tai, sach tham
sach dao » lanh dao
dao khoa » da khoa, lao khoa, dac khoa
su sach » so sach, vu sach
can bai » can ban, cac bai, can dai
su can » su van, su cao, tu can

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( su sach tao duoc sach khoa phap thong ) or ( su can bai thuoc sach dao khoa thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su sach tao duoc sach khoa phap thong ) OR ( su can bai thuoc sach dao khoa thong )).
• Adding a wildcard symbol may retrieve word variants: (( su sach tao duoc sach khoa phap thong ) or ( su can bai thuoc sach dao khoa thong ))*.