Perhaps you should try some spelling variations:
"modified nodal optimization algorithms" » "modified nodal optimisation algorithm", "modified nodal estimation algorithms", "modified nodal estimation algorithm", "modified global optimization algorithms", "modified qoe optimization algorithms", "modified adam optimization algorithms", "modified near optimization algorithms"
"modified objective convolution algorithms" » "modified objective evolution algorithm", "modified objective solution 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 objective convolution algorithms") or ("modified nodal optimization algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified objective convolution algorithms") OR ("modified nodal optimization algorithms")).
• Removing quotes may allow a broader search: (( modified objective convolution algorithms ) or ( modified nodal optimization algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified objective convolution algorithms") or ("modified nodal optimization algorithms"))*.