Perhaps you should try some spelling variations:
phap thong » phap phong, phap chong, pho thong
thuoc sach » hoc sach, nuoc sach, thuat sach
khoan phap » khoan phai, khoa phau, han phap
nay thuoc » cay thuoc, nam thuoc, na thuoc
sach khoa » bach khoa, anh khoa, sinh khoa
khoa phap » khoa phau, khoan phai, khong phap
nha thuoc » nha nuoc, nhan thuc, nha hoc
thuoc cac » thuoc cuc, thuoc cao, thuoc dac
sach nay » sach hay, sach vay, sach nang
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: (( tu sach nay thuoc sach khoa phap thong ) or ( tu sach nha thuoc cac khoan phap thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach nay thuoc sach khoa phap thong ) OR ( tu sach nha thuoc cac khoan phap thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach nay thuoc sach khoa phap thong ) or ( tu sach nha thuoc cac khoan phap thong ))*.