To develop a search strategy:
1) Identify the main concepts of your research question. These concepts become keywords for your searches.
2) Brainstorm related terms, broader terms/narrower terms and alternative spellings for each keyword
3) Combine terms using Boolean Logic.
4) Identify the tool(s) (databases, catalogs, etc.) relevant to your topic.
Biological Abstracts is a database covering life sciences and biomedical research. The focus of Biological Abstracts matches my research area, so it is a viable tool to try my search strategy.