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