Perhaps you should try some spelling variations:
bach khong » bach khang, bach phuong, bach khoa
thuoc sach » hoc sach, nuoc sach, thuat sach
thuc bach » truc bach, thuc cach, thuc hanh
sach dao » lanh dao
dao thuc » dan thuc, dao tuc, do thuc
sach bai » cac bai, sach xa
bai thuc » bai thuoc, bao thuc, dai thuc
thuc anh » thuc hanh, thuy anh, thu anh
anh khoa » doanh khoa, hang khoa
su sach » so sach, vu sach
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: (( su sach dao thuc bach khong _ thong ) or ( thuoc sach bai thuc anh khoa he thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su sach dao thuc bach khong _ thong ) OR ( thuoc sach bai thuc anh khoa he thong )).
• Adding a wildcard symbol may retrieve word variants: (( su sach dao thuc bach khong _ thong ) or ( thuoc sach bai thuc anh khoa he thong ))*.