Perhaps you should try some spelling variations:
"modified multiobjective optimized algorithms" » "modified multiobjective optimization algorithms", "modified multiobjective optimized algorithm", "modified multiobjective optimizer algorithms"
"boiler using search algorithm" » "boiler using source algorithm", "powder using search algorithm", "boiler using egarch algorithm", "boiler nursing research algorithm", "boiler using servo algorithm"

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