Perhaps you should try some spelling variations:
"modified allocation estimation algorithm" » "modified allocation optimization algorithm", "modified motion estimation algorithm"
"modified passive quantization algorithmsss" » "modified adaptive quantization algorithmsss", "modified passive quantization algorithms", "modified passive quantization algorithmic"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified allocation estimation algorithm") OR ("modified passive quantization algorithmsss"))~.
• Removing quotes may allow a broader search: (( modified allocation estimation algorithm ) or ( modified passive quantization algorithmsss ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified allocation estimation algorithm") or ("modified passive quantization algorithmsss"))*.