Perhaps you should try some spelling variations:
introduction complementary » introduction commentary, introduction elementary, interactions complementary
complementary origin » complementary design, complementary motion, complementary oil
microarray profiling » microrna profiling
origin diffusion » driven diffusion, oxygen diffusion
array profiling » array processing

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• The words AND, OR and NOT may confuse the search; try adding quotes: "introduction complementary origin diffusion ((microarray profiling) OR (array profiling))~".
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