Perhaps you should try some spelling variations:
"modified objective optimisation algorithms" » "modified objective optimisation algorithm", "modified objective optimization algorithms", "modified objective estimation algorithms", "modified multiobjective optimization algorithms"
"modified quadratic optimization algorithm" » "modified static optimization algorithm", "modified quadratic optimization algorithms", "modified quadratic optimisation algorithm", "modified quadratic estimation algorithm"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified objective optimisation algorithms\") OR (\"modified quadratic optimization algorithm\"))~".
• Removing quotes may allow a broader search: (( modified objective optimisation algorithms ) OR ( modified quadratic optimization algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified objective optimisation algorithms") OR ("modified quadratic optimization algorithm"))*.