Perhaps you should try some spelling variations:
"modified allocation optimization algorithms" » "modified allocation optimisation algorithm", "modified allocation estimation algorithms", "modified allocation estimation algorithm", "modified location optimization algorithms"
"modified changing estimation algorithmss" » "modified changing estimation algorithms", "modified changing estimation algorithm", "modified channel estimation algorithmss", "modified charging station algorithmss", "modified caging estimation algorithmss"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified changing estimation algorithmss") OR ("modified allocation optimization algorithms"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified changing estimation algorithmss\") OR (\"modified allocation optimization algorithms\"))".
• Removing quotes may allow a broader search: (( modified changing estimation algorithmss ) OR ( modified allocation optimization algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified changing estimation algorithmss") OR ("modified allocation optimization algorithms"))*.