Perhaps you should try some spelling variations:
"modified multiobjective optimization algorithm" » "modified multiobjective optimization algorithms", "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithm"
"code using pre algorithm" » "code using mppt algorithm", "code using qspr algorithm", "code using _ algorithm", "code nursing pre algorithm", "code using one algorithm", "code using ph algorithm", "core using pre 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: "((\"code using pre algorithm\") OR (\"modified multiobjective optimization algorithm\"))~".
• Removing quotes may allow a broader search: (( code using pre algorithm ) OR ( modified multiobjective optimization algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("code using pre algorithm") OR ("modified multiobjective optimization algorithm"))*.