Perhaps you should try some spelling variations:
tham thuoc » pham thuoc, tham thuc, nha thuoc
thuoc sach » hoc sach, nuoc sach, thuat sach
thuat lanh » thuat lap, thuat san
phap thong » phap phong, phap chong, pho thong
sach tham » sach nha
sach khoa » bach khoa, sach nha, anh khoa
hoc tieng » hoc hien
khoa phap » khoa phau, khoan phai, khong phap
khoa hoc » hoa hoc
cac khoa » cac khoan, cac khoi, dac khoa
te sach » toc sach
lanh va » hanh va, anh va, lanh dao
tuc cac » tu cac, tich cac
va tuc » va thuc, va tu, va tac

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( te sach tham thuoc sach khoa hoc tieng ) or ( thuat lanh va tuc cac khoa phap thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te sach tham thuoc sach khoa hoc tieng ) OR ( thuat lanh va tuc cac khoa phap thong )).
• Adding a wildcard symbol may retrieve word variants: (( te sach tham thuoc sach khoa hoc tieng ) or ( thuat lanh va tuc cac khoa phap thong ))*.