Perhaps you should try some spelling variations:
allocation optimisation » allocation optimization
optimisation algorithm » optimization algorithms, estimation algorithm, estimation algorithms
modified learning » mobile learning, modified caging
mppt algorithm » mom algorithm, qspr algorithm

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( modified learning mppt algorithm ) OR ( modified allocation optimisation algorithm ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( modified learning mppt algorithm ) OR ( modified allocation optimisation algorithm ))".
• Adding a wildcard symbol may retrieve word variants: (( modified learning mppt algorithm ) OR ( modified allocation optimisation algorithm ))*.