Perhaps you should try some spelling variations:
"modified multiobjective optimization algorithm" » "modified multiobjective optimization algorithms", "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithm"
"model using source algorithm" » "model using our algorithm", "model using search algorithm", "model using force algorithm", "model using morse algorithm", "code using source algorithm", "models nursing source algorithm", "powder using source 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 optimization algorithm") OR ("model using source algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified multiobjective optimization algorithm\") OR (\"model using source algorithm\"))".
• Removing quotes may allow a broader search: (( modified multiobjective optimization algorithm ) OR ( model using source algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified multiobjective optimization algorithm") OR ("model using source algorithm"))*.