Perhaps you should try some spelling variations:
based presentation » based representation, case presentation, brief presentation
commercial across » commercial crops, commercial actors, commercial crisis
across fourier » across sources, across countries
fourier based » course based, order based
als studies » cass studies, ias studies, ijs studies
css studies » cases studies, cost studies, across studies

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

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