Perhaps you should try some spelling variations:
"modified multiobjective optimisation algorithm" » "modified multiobjective optimization algorithm", "modified objective optimization algorithm", "modified multiobjective optimization algorithms", "modified multiobjective estimation algorithm", "modified multiobjective estimation algorithms"
"code using search algorithm" » "code using source algorithm", "code using egarch algorithm", "code nursing research algorithm", "code using servo algorithm", "core using search 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: (("code using search algorithm") or ("modified multiobjective optimisation algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("code using search algorithm") OR ("modified multiobjective optimisation algorithm")).
• Removing quotes may allow a broader search: (( code using search algorithm ) or ( modified multiobjective optimisation algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("code using search algorithm") or ("modified multiobjective optimisation algorithm"))*.