Perhaps you should try some spelling variations:
"modified invasive optimization algorithms" » "modified invasive optimisation algorithm", "modified invasive estimation algorithm", "modified invasive optimized algorithms", "modified passive optimization algorithms"
"modified allocation estimation algorithms" » "modified allocation optimization algorithms", "modified motion estimation algorithms", "modified allocation estimation algorithm", "modified allocation optimisation algorithm", "modified allocation approximation algorithms"

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

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