Perhaps you should try some spelling variations:
commercial across » commercial crops, commercial actors, commercial crisis
self presentation » _ presentation
equity studies » security studies, quality studies, city studies
equity stakes » equity stake
across earth » across health, across east, across north
earth self » early self, earth sex, ehealth self

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 earth self presentation ((equity studies) OR (equity stakes)).~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "commercial across earth self presentation ((equity studies) OR (equity stakes)).".
• Adding a wildcard symbol may retrieve word variants: commercial across earth self presentation ((equity studies) OR (equity stakes)).*.