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