Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thu tuong » tu tuong, thu huong, thuy duong
dao thuoc » cao thuoc, tao thuoc, dang thuoc
bai thuc » bai thuoc, bao thuc, dai thuc
thuc cac » thuc cach, tuc cac, phuc cac
cac khoa » cac khoan, cac khoi, dac khoa
khoa thu » khoa than, hoai thu, ho thu
sach bai » cac bai, sach xa
sach dao » lanh dao
su sach » so sach, vu sach
va he » va ghe, va de, va le

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 bai thuc cac khoa thu tuong ) or ( su sach dao thuoc sach ((va he) or (va che)) thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su sach bai thuc cac khoa thu tuong ) OR ( su sach dao thuoc sach ((va he) OR (va che)) thong )).
• Adding a wildcard symbol may retrieve word variants: (( su sach bai thuc cac khoa thu tuong ) or ( su sach dao thuoc sach ((va he) or (va che)) thong ))*.