Perhaps you should try some spelling variations:
"complement leiden algorithm" » "complement deer algorithm" (Expand Search), "implement leiden algorithm" (Expand Search), "complementary leiden algorithm" (Expand Search)
"neural coding algorithm" » "neural cosine algorithm" (Expand Search), "neural colony algorithm" (Expand Search), "neural scheduling algorithm" (Expand Search)
"element cnn algorithm" » "element rd algorithm" (Expand Search), "element colony algorithm" (Expand Search), "element cosine algorithm" (Expand Search), "elements cnn algorithm" (Expand Search)

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