Perhaps you should try some spelling variations:
doanh khoa » toan khoa
phan tuong » phan thuong, phan truong, phan xuong
phau thong » phap thong, khau thong, phan thong
cach thuc » anh thuc, cac thu
khoa phau » hoa phan, khoa kham, khoa than
hoc phan » hoc dan, hoc pho
vu doanh » va doanh, su doanh, van doanh
cac tai » cao tai, cac bai, cac dai
tai thi » tai chi
thi anh » thi hanh, thi thanh, thich anh
anh hoc » sinh hoc, benh hoc, hinh hoc
su cach » su sach, tu cach, su cac
thuc vu » phuc vu, thuc va, thuc ve

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 tai thi anh hoc phan tuong ) or ( su cach thuc vu doanh khoa phau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu cac tai thi anh hoc phan tuong ) OR ( su cach thuc vu doanh khoa phau thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu cac tai thi anh hoc phan tuong ) or ( su cach thuc vu doanh khoa phau thong ))*.