Perhaps you should try some spelling variations:
cach khang » bach khang, cach mang, cach nhanh
khang nghe » hang nghe, thang nghe, lang nghe
nghe thong » he thong
thuoc sach » hoc sach, nuoc sach, thuat sach
kham thong » khap thong, khau thong, pham thuong
thuc cach » truoc cach, thuc hanh, tuc cac
bai thuoc » ban thuoc, bai hoc, cay thuoc
bai thuc » bao thuc, dai thuc, loai thuc
nha kham » nhan kham, nho kham, nhap khau
can bai » can ban, cac bai, can dai
su can » su van, su cao, tu can

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( su can bai thuc cach khang nghe thong ) or ( su can bai thuoc sach nha kham thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su can bai thuc cach khang nghe thong ) OR ( su can bai thuoc sach nha kham thong )).
• Adding a wildcard symbol may retrieve word variants: (( su can bai thuc cach khang nghe thong ) or ( su can bai thuoc sach nha kham thong ))*.