Perhaps you should try some spelling variations:
"modified delphi convolution algorithms" » "modified delphi evolution algorithm", "modified delphi solution algorithm"
"modified water estimation algorithms" » "modified water estimation algorithm", "modified water optimization algorithms", "modified water optimisation algorithm", "modified cover estimations algorithms", "modified sphere estimation algorithms", "modified pose estimation algorithms", "modified male estimation algorithms"

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 water estimation algorithms") or ("modified delphi convolution algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified water estimation algorithms") OR ("modified delphi convolution algorithms")).
• Removing quotes may allow a broader search: (( modified water estimation algorithms ) or ( modified delphi convolution algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified water estimation algorithms") or ("modified delphi convolution algorithms"))*.