Perhaps you should try some spelling variations:
"modified objective optimization algorithm" » "modified multiobjective optimization algorithm", "modified objective optimization algorithms", "modified objective optimisation algorithm", "modified objective estimation algorithms"
"modified network estimation algorithm" » "modified network optimization algorithm", "certified network estimation algorithm", "defined network estimation algorithm", "modified near estimation 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 network estimation algorithm") OR ("modified objective optimization algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified network estimation algorithm\") OR (\"modified objective optimization algorithm\"))".
• Removing quotes may allow a broader search: (( modified network estimation algorithm ) OR ( modified objective optimization algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified network estimation algorithm") OR ("modified objective optimization algorithm"))*.