Perhaps you should try some spelling variations:
khoan phap » khoan phai, khoa phau, han phap
phap thong » phap phong, phap chong, pho thong
thai thuoc » thai thuc, thai hoc, nha thuoc
thuoc sach » hoc sach, nuoc sach, thuat sach
phan thong » phan thuong, phan hong, phan tong
oanh thi » anh thi, oanh tho, doanh tai
ban thai » ban than, ban thi, ban tai
tu oanh » thu oanh, tu hanh, tu manh
thi phu » thi thu, thi nhu, thi phi
phu cac » phuc cac, pha cac, phu can
sach ha » sach nha, sach han, sach xa
ha phan » hoa phan, hai phan, va phan
tu ban » thu ban, te ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu oanh thi phu cac khoan phap thong ) OR ( tu ban thai thuoc sach ha phan thong ))~.
• Adding a wildcard symbol may retrieve word variants: (( tu oanh thi phu cac khoan phap thong ) or ( tu ban thai thuoc sach ha phan thong ))*.