Perhaps you should try some spelling variations:
representation earlier » representation learning, representation series, representation values
data representation » data presentation, legal representation, self representation
earlier studies » early studies
code earth » code search
one earth » one heart, one part, one birth

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

• Performing a fuzzy search may retrieve terms with similar spellings: commercial ((code earth) or (one earth)) data representation earlier studies.~.
• If you are trying to use Boolean operators, they must be ALL CAPS: commercial ((code earth) OR (one earth)) data representation earlier studies..
• Adding a wildcard symbol may retrieve word variants: commercial ((code earth) or (one earth)) data representation earlier studies.*.