Perhaps you should try some spelling variations:
"modified changing estimation algorithmss" » "modified changing estimation algorithms", "modified changing estimation algorithm", "modified changing optimization algorithms", "modified channel estimation algorithmss", "modified charging station algorithmss", "modified caging estimation algorithmss"
"modified objective allocation algorithm" » "modified objective estimation algorithm", "modified objective evolution algorithm", "modified objective predation 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: (("modified objective allocation algorithm") or ("modified changing estimation algorithmss"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified objective allocation algorithm") OR ("modified changing estimation algorithmss")).
• Removing quotes may allow a broader search: (( modified objective allocation algorithm ) or ( modified changing estimation algorithmss )).
• Adding a wildcard symbol may retrieve word variants: (("modified objective allocation algorithm") or ("modified changing estimation algorithmss"))*.