Perhaps you should try some spelling variations:
"scatter-water implementation" » "scatter-faster implementation", "scatter-after implementation", "scatter-paper implementation"
"scatter-layer implementation" » "scatter-der implementation", "scatter-after implementation", "scatter-filter implementation"

Try widening your search to All Fields.

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"scatter-water implementation\") OR (\"scatter-layer implementation\"))".
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• Adding a wildcard symbol may retrieve word variants: (("scatter-water implementation") OR ("scatter-layer implementation"))*.