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