Perhaps you should try some spelling variations:
bach khuan » bach khoa, bach khang, bach xuan
khuan toan » thuat toan, chuan doan, xuan toan
khoan phai » khong phai, khoa phau, khoan hoi
phai thong » phap thong, phai tuong, phan thong
thuc bach » truc bach, thuc cach, thuoc sach
sach dao » lanh dao
dao thuc » dan thuc, dao tuc, do thuc
cach noi » cach thoi, hanh noi, anh noi
noi thuc » choi thuc, nghi thuc, cuoi thuc
thuc cac » thuc cach, tuc cac, phuc cac
su sach » so sach, vu sach
tu cach » tu cac

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 khuan toan thong ) or ( tu cach noi thuc cac khoan phai thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su sach dao thuc bach khuan toan thong ) OR ( tu cach noi thuc cac khoan phai thong )).
• Adding a wildcard symbol may retrieve word variants: (( su sach dao thuc bach khuan toan thong ) or ( tu cach noi thuc cac khoan phai thong ))*.