Perhaps you should try some spelling variations:
"modified network optimization algorithms" » "modified network optimisation algorithm", "modified network estimation algorithms", "modified network estimation algorithm", "certified network optimization algorithms", "defined network optimization algorithms", "modified near optimization algorithms"
"model forecasting method algorithm" » "model focusing method algorithm", "model forecasting mixed algorithm", "model forecasting mom algorithm"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("model forecasting method algorithm") or ("modified network optimization algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("model forecasting method algorithm") OR ("modified network optimization algorithms")).
• Removing quotes may allow a broader search: (( model forecasting method algorithm ) or ( modified network optimization algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("model forecasting method algorithm") or ("modified network optimization algorithms"))*.