Perhaps you should try some spelling variations:
presentation based » presentation ease, representations based, presentation phase
presentation layer » presentation ease, presentation lab, presentation large
commercial crisis » commercial crimes, commercial risks, commercial credits
crisis fourier » crisis frontier, crisis countries
fourier based » course based, order based

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

• Performing a fuzzy search may retrieve terms with similar spellings: commercial crisis fourier based ((presentation based) OR (presentation layer)) studies.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "commercial crisis fourier based ((presentation based) OR (presentation layer)) studies.".
• Adding a wildcard symbol may retrieve word variants: commercial crisis fourier based ((presentation based) OR (presentation layer)) studies.*.