Perhaps you should try some spelling variations:
"modified nacl convolution algorithms" » "modified nacl evolution algorithm", "modified nacl solution algorithm", "modified nacl solution algorithms", "modified male convolution algorithms", "modified near convolution algorithms", "modified orca convolution algorithms"
"modified allocation optimization algorithm" » "modified allocation optimization algorithms", "modified allocation optimisation algorithm", "modified allocation estimation algorithm", "modified location optimization algorithm"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified nacl convolution algorithms") or ("modified allocation optimization algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified nacl convolution algorithms") OR ("modified allocation optimization algorithm")).
• Removing quotes may allow a broader search: (( modified nacl convolution algorithms ) or ( modified allocation optimization algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified nacl convolution algorithms") or ("modified allocation optimization algorithm"))*.