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The advanced search in the ScienceDirect database seems to be limited to 8 boolean operators at max. This number of operators might not be sufficient, especially when applying a search string within a systematic literature review that is valid for other databases, e.g., ACM DL or IEEE Xplore DL which are capable of accepting search strings holding more boolean operators.

What are strategies to apply a search string with more than 8 boolean operators to the ScienceDirect database?

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  • Please post the exact error message you received so that people might be able to help you.
    – Tripartio
    Jun 21, 2020 at 12:29
  • 1
    @Tripartio "Use fewer boolean connectors (max 8 per field)"
    – Raghav Mittal
    Jun 22, 2020 at 5:47
  • 5
    Split it into two (or more) separate queries and combine the results.
    – Louic
    Jun 22, 2020 at 8:16
  • Talk to a research librarian at your institution.
    – Jon Custer
    Jun 22, 2020 at 21:26
  • 1
    A reference manager?
    – Louic
    Jun 23, 2020 at 10:44

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