Perhaps you should try some spelling variations:
transform burden » transport burden, transform order, transform fourier
der transform » we transform, der transfer, der transfers
burden across » borders across
teacher bei » teacher per, teacher i, teacher ii
bias ende » bis ende, bias index, das ende
e student » a student, 2 student, 3 student
luis e » luis f, luis c, luis a

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( bias ende der transform burden across ) or ( luis e student teacher bei cacao ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( bias ende der transform burden across ) OR ( luis e student teacher bei cacao )).
• Adding a wildcard symbol may retrieve word variants: (( bias ende der transform burden across ) or ( luis e student teacher bei cacao ))*.