Complete search strategies for the project: "Sanitation and Hygiene (WASH) Systems Strengthening in Low- and Middle-Income Countries (LMICs): A Systematic Review on the state of the evidence". The search strategies contain strings of terms to reflect the following concepts: systems strengthening; water, sanitation and hygiene; contexts within which systems strengthening occurs. 9 databases were searched, these are: EBSCOhost Africa-Wide Information; EBSCOhost CINAHL Complete; Ovid Econlit; Ovid Embase Classic+Embase; Ovid Global Health; WHO Global Index Medicus; Ovid Medline ALL; Web of Science SciELO; Web of Science Core Collection.