Perhaps you should try some spelling variations:
"modified topology optimization algorithm" » "modified topology optimization algorithms", "modified topology optimisation algorithm", "modified topology estimation algorithm"
"modified learning method algorithm" » "mobile learning method algorithm", "modified caging method algorithm", "modified learning mom algorithm", "modified learning methods algorithm", "modified graining methods algorithm", "modified learning emotion 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: (("modified topology optimization algorithm") or ("modified learning method algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified topology optimization algorithm") OR ("modified learning method algorithm")).
• Removing quotes may allow a broader search: (( modified topology optimization algorithm ) or ( modified learning method algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified topology optimization algorithm") or ("modified learning method algorithm"))*.