Perhaps you should try some spelling variations:
"elemental mapping algorithms" » "elemental learning algorithms" (Expand Search), "elementsal mapping algorithms" (Expand Search), "elementary mapping algorithms" (Expand Search), "elements mapping algorithms" (Expand Search)
"neural cosine algorithm" » "neural colony algorithm" (Expand Search)
"element gnb algorithm" » "element rd algorithm" (Expand Search), "elements gnb algorithm" (Expand Search)

Try widening your search to All Fields.

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