Perhaps you should try some spelling variations:
than thong » than thuong, toan thong, tran thong
tham thuoc » pham thuoc, tham thuc, nha thuoc
thuoc sach » hoc sach, nuoc sach, thuat sach
phap thong » phap phong, phap chong, pho thong
thuc cach » truoc cach, thuc hanh, tuc cac
cach khoa » bach khoa, cac khoa, cac khoan
khoa than » khoa luan, hoa thai, hoa tan
sach tham » sach nha
sach khoe » suc khoe, bach khoa, sach che
khoe phap » khong phap, hoc phap, khoa phau
sach tri » sach tai, sach tren, sach truc
tri thuc » tri tue
thu sach » tu sach, thuat sach, thu hoach
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: (( te sach tri thuc cach khoa than thong ) or ( thu sach tham thuoc sach khoe phap thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te sach tri thuc cach khoa than thong ) OR ( thu sach tham thuoc sach khoe phap thong )).
• Adding a wildcard symbol may retrieve word variants: (( te sach tri thuc cach khoa than thong ) or ( thu sach tham thuoc sach khoe phap thong ))*.