Perhaps you should try some spelling variations:
tham thuoc » pham thuoc, tham thuc, nha thuoc
thuoc sach » hoc sach, nuoc sach, thuat sach
phu thong » pho thong, phap thong, khau thong
sinh thai » dinh thi
thai thuc » thai thuy, thai tuc, tham thuc
hanh khoa » hang khoa, anh khoa, hanh hoa
co sach » bo sach, cuon sach, hoc sach
nha phu » nha chu, nhanh phu, chau phu
su sinh » su kinh, so sinh, su hinh
khoa he » hoa he, khoa hoc, khong he

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( co sach tham thuoc sach nha phu thong ) or ( su sinh thai thuc hanh khoa he thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( co sach tham thuoc sach nha phu thong ) OR ( su sinh thai thuc hanh khoa he thong )).
• Adding a wildcard symbol may retrieve word variants: (( co sach tham thuoc sach nha phu thong ) or ( su sinh thai thuc hanh khoa he thong ))*.