Perhaps you should try some spelling variations:
"modified delphi convolutional algorithm" » "modified delphi convolution algorithms", "modified delphi evolution algorithm", "modified delphi evolutionary algorithm", "modified deep convolutional algorithm", "modified graph convolutional algorithm", "modified d convolutional algorithm"
"modified quadratic optimization algorithm" » "modified static optimization algorithm", "modified quadratic optimization algorithms", "modified quadratic optimisation algorithm", "modified quadratic estimation 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 delphi convolutional algorithm") or ("modified quadratic optimization algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified delphi convolutional algorithm") OR ("modified quadratic optimization algorithm")).
• Removing quotes may allow a broader search: (( modified delphi convolutional algorithm ) or ( modified quadratic optimization algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified delphi convolutional algorithm") or ("modified quadratic optimization algorithm"))*.