Look for indexing of implementation strategies as

• Subject Headings Ex. PubMed Epidemiologic Studies, Qualitative Research
• Document Types / Article Types / Publication Types Ex. PubMed Clinical Trial

If your implementation strategy is not found in either, use keywords.

PsycInfo has a Methodology field:

Use broad coverage databases to view research articles across different disciplines.  Use keywords for the implementation strategy.

• Use keywords to specify disciplines
• Use the database filters to specify disciplines

Web of Science

ex. "mobile applications" implementation
 

Use disciplinary databases to find health implementation strategies.

ex. INSPEC (engineering database) pain management

Look at implementation strategies from other disciplines.