Perhaps you should try some spelling variations:
thuoc doanh » thuoc dang, thuoc dong, thuoc thanh
tham thuoc » pham thuoc, tham thuc, nha thuoc
phan thong » phan thuong, phan hong, phan tong
sach tham » sach nha
doanh hoa » doanh khoa, doanh hoan, danh hoa
hoach dao » hoach dat, hoach do, hoach giao
thuc cach » thuoc sach, truoc cach, thuc hanh
cach khoa » bach khoa, cac khoa, cac khoan
hoc thong » hoc thuong, hoc trong, hoc hong
hoa phan » hoa dan, co phan
dao thuc » dan thuc, dao tuc, do thuc
khoa hoc » hoa hoc
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 tham thuoc doanh hoa phan thong ) or ( thu hoach dao thuc cach khoa hoc thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach tham thuoc doanh hoa phan thong ) OR ( thu hoach dao thuc cach khoa hoc thong ))*.