Perhaps you should try some spelling variations:
"modified nodal optimisation algorithm" » "modified nodal optimization algorithms", "modified nodal estimation algorithm", "modified nodal estimation algorithms", "modified global optimization algorithm", "modified adam optimisation algorithm", "modified near optimisation algorithm"
"modified objective allocation algorithm" » "modified objective estimation algorithm", "modified objective evolution algorithm", "modified objective predation algorithm"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified objective allocation algorithm") OR ("modified nodal optimisation algorithm"))~.
• Removing quotes may allow a broader search: (( modified objective allocation algorithm ) or ( modified nodal optimisation algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified objective allocation algorithm") or ("modified nodal optimisation algorithm"))*.