Perhaps you should try some spelling variations:
phap thong » phap phong, phap chong, pho thong
tham thuoc » pham thuoc, tham thuc, nha thuoc
thuoc bach » thuoc sach, thuoc ban, truc bach
phau thong » khau thong, phan thong, phan thuong
sach tren » sach tien, sach tranh
khoa phap » khoan phai, khong phap, hoa phan
sach tham » sach nha
bach khoa » anh khoa
khoa phau » hoa phan, khoa kham, khoa than
tren tac » tren tau, tren thuc, trong tac
dac khoa » da khoa, dai khoa, dau khoa
tu sach » thu sach, su sach, tu cach
tac dac » tac da, tac dao, tac dau
te sach » toc 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 tren tac dac khoa phap thong ) or ( te sach tham thuoc bach khoa phau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach tren tac dac khoa phap thong ) OR ( te sach tham thuoc bach khoa phau thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach tren tac dac khoa phap thong ) or ( te sach tham thuoc bach khoa phau thong ))*.