Perhaps you should try some spelling variations:
transformer varied » transformer based, transformer infrared
students transfers » student transfers, students transfer, student transfer
3 transformer » 3 transformers, _ transformer, 3 transformar
varied across » varies across, carried across, vary across
3.2 students » 3 students, 4 students
transfers ai » transfers i, transfers bei, transfers dau
luis 3.2 » fluids 3.2, louis 3.1, luis h.b
ende 3 » eide 3, ende 2, ende 5
bis » bias
macro » micro

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( bis ende 3 transformer varied across ) OR ( luis 3.2 students transfers ai (macao OR macro) ))~.
• Adding a wildcard symbol may retrieve word variants: (( bis ende 3 transformer varied across ) or ( luis 3.2 students transfers ai (macao or macro) ))*.