Perhaps you should try some spelling variations:
"modified objective optimization algorithms" » "modified objective optimisation algorithm", "modified objective estimation algorithms", "modified objective estimation algorithm", "modified multiobjective optimization algorithms"
"mapping forecasting method algorithm" » "mapping focusing method algorithm", "mapping forecasting mixed algorithm", "mapping forecasting mom algorithm"

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: "((\"mapping forecasting method algorithm\") OR (\"modified objective optimization algorithms\"))~".
• Removing quotes may allow a broader search: (( mapping forecasting method algorithm ) OR ( modified objective optimization algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("mapping forecasting method algorithm") OR ("modified objective optimization algorithms"))*.