Perhaps you should try some spelling variations:
thuc doanh » thuc hanh, thuc dan, chuc danh
doanh khoa » toan khoa
khap thong » phap thong, khau thong, khac thuong
thuoc bang » thuoc ban, thuoc dang, truoc bang
khoa khap » khoa kham, khoa khac, kho khan
tri thuoc » tri thuc, tri hoc, tin thuoc
bang khoa » hang khoa, dang khoa, vang khoa
tro thuc » tron thuc, tri thuc, tra thuc
dinh tri » dinh thi, chinh tri
so dinh » do dinh, co dinh, so sinh
khoa he » hoa he, khoa hoc, khong he

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu cac tro thuc doanh khoa khap thong ) or ( so dinh tri thuoc bang khoa he thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu cac tro thuc doanh khoa khap thong ) OR ( so dinh tri thuoc bang khoa he thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu cac tro thuc doanh khoa khap thong ) or ( so dinh tri thuoc bang khoa he thong ))*.