Perhaps you should try some spelling variations:
thuat doanh » thuat toan, luat doanh, thuat lanh
thuc thuoc » thuc thuc, truc thuoc, thu thuoc
thuoc dang » thuoc dung, thuoc khang, thuc dan
doanh khoa » toan khoa
cach thuc » anh thuc, cac thu
dang khoa » dung khoa, hang khoa, dang khoi
khoa khau » khoa kham, khoa phau, khoa chau
khau tong » khau thong, khau cong, khau thuong
tri thuat » trien thuat, ki thuat, tri thuc
sach tri » sach tai, sach tren, sach truc
va cach » va cac
te sach » toc sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( va cach thuc thuoc dang khoa khau tong ) or ( te sach tri thuat doanh khoa khau tong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( va cach thuc thuoc dang khoa khau tong ) OR ( te sach tri thuat doanh khoa khau tong )).
• Adding a wildcard symbol may retrieve word variants: (( va cach thuc thuoc dang khoa khau tong ) or ( te sach tri thuat doanh khoa khau tong ))*.