Perhaps you should try some spelling variations:
doanh khoa » toan khoa
khau thong » khau thuong, khap thong, khau tong
thuc doanh » thuc hanh, thuc dan, chuc danh
khoa khau » khoa kham, khoa phau, khoa chau
pho thong » he thong
lenh dao » lanh dao, benh dai, minh dao
tu doanh » su doanh, te doanh, ty doanh
thi thuc » thai thuc, thi thu, thi thuy
khoa pho » khoa phu, khoa khoa, khoa phau
cac thi » cac thoi, cau thi, can thi
dao tu » dao tuc, dao tru, tao tu
su cac » tu cac, su cao, su can

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu lenh dao tu doanh khoa khau thong ) or ( su cac thi thuc doanh khoa pho thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu lenh dao tu doanh khoa khau thong ) OR ( su cac thi thuc doanh khoa pho thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu lenh dao tu doanh khoa khau thong ) or ( su cac thi thuc doanh khoa pho thong ))*.