Perhaps you should try some spelling variations:
"evidence-based synthesis program" » "evidence-based synthesis problem", "evidence-based synthesis problems"
"Evidence-acid synthesis process" » "Evidence-acid synthesis processing", "Evidence-acid synthesis problems", "Evidence-acid synthesis problem"

Try widening your search to All Fields.

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("evidence-based synthesis program") OR ("Evidence-acid synthesis process")).
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