Perhaps you should try some spelling variations:
"modified allocation estimation algorithms" » "modified allocation optimization algorithms", "modified motion estimation algorithms", "modified allocation estimation algorithm", "modified allocation optimisation algorithm"
"modified adaptive optimized algorithm" » "modified adaptive optimized algorithms", "modified adaptive optimizer algorithms", "modified passive optimized 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 allocation estimation algorithms") or ("modified adaptive optimized algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified allocation estimation algorithms") OR ("modified adaptive optimized algorithm"))*.
• Removing quotes may allow a broader search: (( modified allocation estimation algorithms ) or ( modified adaptive optimized algorithm ))*.