The hypothesis or problem statement is not searched completely as stated. Most searches will focus on the problem (P) and the Improvement (I). When a comparison of two ways of doing things (C) is needed, that part becomes the 3rd concept in your search strategy. The results or outcome is not part of the search strategy.
To get up to speed on your topic you need the "who, what, where, when, why or how"
Background | 5 Ws - Foreground | PICO
Who or What equals Population, Problem, or Process
How or Why equals Intervention, Investigation, or Improvement
Where or When equals Comparison or conditions of what you are studying