Perhaps you should try some spelling variations:
sach trien » sach tien, sach tren, sach thieu
trien thuc » trien thuoc, tren thuc, trien thuat
khoa thong » hoa thong, thoai thong, pho thong
thuoc bach » thuoc sach, thuoc ban, truc bach
bach khang » bac thang, bach dang
anh khuan » anh chuan, anh tuan, anh khoa
bai thuoc » ban thuoc, bai hoc, cay thuoc
thuc anh » thuc hanh, thuy anh, thu anh
sach bai » sach dao, cac bai, sach xa
khang he » khong he, khang kho, hang ha
tu sach » thu sach, su sach, te sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu sach trien thuc anh khuan khoa thong ) or ( tu sach bai thuoc bach khang he thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach trien thuc anh khuan khoa thong ) OR ( tu sach bai thuoc bach khang he thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach trien thuc anh khuan khoa thong ) or ( tu sach bai thuoc bach khang he thong ))*.