Perhaps you should try some spelling variations:
quan doanh » quan doan, nhuan doanh, quan hoang
doanh khoa » toan khoa
phau thong » phap thong, khau thong, phan thong
kham thong » khap thong, khau thong, pham thuong
cach thuc » anh thuc, cac thu
thuc quan » chuc quan, thue quan, thuc huan
khoa phau » hoa phan, khoa than, khoa thu
thuc lieu » thuc hieu, thuc dieu, thuoc dieu
lieu nang » lieu nano, lieu giang, lieu cong
nang khoa » hang khoa, dang khoa, nang hoa
khoa kham » kho khan, khoa than
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: (( tu cach thuc quan doanh khoa phau thong ) or ( tu cach thuc lieu nang khoa kham thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu cach thuc quan doanh khoa phau thong ) OR ( tu cach thuc lieu nang khoa kham thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu cach thuc quan doanh khoa phau thong ) or ( tu cach thuc lieu nang khoa kham thong ))*.