Perhaps you should try some spelling variations:
khac thuong » hoc thuong, phan thuong, pham thuong
toan trien » toan tien, hoan thien, toan dien
trien thuc » trien thuoc, tren thuc, trien thuat
cach khoan » cac khoan, cach hoan, bach khoa
phai chong » phap chong, pham chuong, khai chuong
thuc cach » thuoc sach, truoc cach, thuc hanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat toan trien thuc cach khoan ((phai chong) or (khac thuong))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat toan trien thuc cach khoan ((phai chong) OR (khac thuong)).
• Adding a wildcard symbol may retrieve word variants: thuat toan trien thuc cach khoan ((phai chong) or (khac thuong))*.