Perhaps you should try some spelling variations:
bach khuan » bach khoa, bach khang, bach xuan
khoa thong » hoa thong, thoai thong, pho thong
cach khuan » cac khoan, cach hoan
sanh tham » san pham, sinh thai, van tham
tham thuc » nham thuc, pham thuc, tam thuc
thuc bach » truc bach, thuoc sach, thuc hanh
sach tham » sach nha
thuc cach » thuoc sach, truoc cach, thuc hanh
so sanh » do sanh
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: (( so sanh tham thuc bach khuan khoa thong ) or ( te sach tham thuc cach khuan khoa thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( so sanh tham thuc bach khuan khoa thong ) OR ( te sach tham thuc cach khuan khoa thong )).
• Adding a wildcard symbol may retrieve word variants: (( so sanh tham thuc bach khuan khoa thong ) or ( te sach tham thuc cach khuan khoa thong ))*.