Perhaps you should try some spelling variations:
microphase separation » phase separation (Expand search)
separation process » separation processes (Expand search)
decrease ratio » decreased ratio (Expand search), decrease at (Expand search), decreased rate (Expand search)
ratio decrease » rate decrease (Expand search), rapid decrease (Expand search), ratio increase (Expand search)
in microphase » in macrophage (Expand search), of microphase (Expand search), in macrophages (Expand search)
decrease to » decreased to (Expand search), decrease toc (Expand search), decrease the (Expand search)

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