The databases you use in your research will all have slightly different syntaxes for refinement tools and search fields. They will also use their own set of controlled vocabulary or subject headings. For this reason, you cannot always simply copy and paste search strings from one database to another.
You may want to use the advanced search tools in each database and adjust the search as described in the Simple to Complex section of this guide.
You can also look at the help files in each database to take a look at the syntax used to refine and limit searches.
Another option is to use tools like Polyglot or 2dSearch (see below).