Perhaps you should try some spelling variations:
22image processing » image processing, onimage processing, toimage processing
pc computer » pc computers, hpc computer, ppc computer
2f methods » f methods, hf methods, nf methods
cf methods » scf methods, crf methods, dcf methods

Try widening your search to All Fields.

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "%22image processing%pc computer-assisted %((2f methods) OR (cf methods))%22".
• Adding a wildcard symbol may retrieve word variants: %22image processing%pc computer-assisted %((2f methods) OR (cf methods))%22*.