Perhaps you should try some spelling variations:
"modified objective optimized algorithms" » "modified objective optimized algorithm", "modified objective optimizer algorithms", "modified objective optimization algorithms", "modified objective optimal algorithms"
"machines using pre algorithm" » "machinery using pre algorithm", "machines using mppt algorithm", "machines using qspr algorithm", "machines using _ algorithm", "machines nursing pre algorithm", "machines using one algorithm", "machines using ph algorithm"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("machines using pre algorithm") OR ("modified objective optimized algorithms"))~.
• Removing quotes may allow a broader search: (( machines using pre algorithm ) or ( modified objective optimized algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("machines using pre algorithm") or ("modified objective optimized algorithms"))*.