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To create an overview and for the search to be possible to redo, it is important to document your search.
The documentation should contain:
The database’s (and database supplier’s) name
The date when the search was made
The exact search words
How the search words have been combined
The limitations the have been used
Use the search history
The search history that the databases provide can be a good help when you document your searching.
One recommendation is to copy your search blocks to a Word document. This gives a clear overview and you can reuse your search words by “copying and pasting" in your search words from the Word document to the respective database.