Perhaps you should try some spelling variations:
"level coding algorithm" » "level cosine algorithm" (Expand Search), "level modeling algorithm" (Expand Search), "level finding algorithm" (Expand Search), "level according algorithm" (Expand Search), "level using algorithm" (Expand Search)
"complement cnn algorithm" » "complement c3 algorithm" (Expand Search), "complement c4d algorithm" (Expand Search), "complement c5 algorithm" (Expand Search), "complement mean algorithm" (Expand Search), "complement _ algorithm" (Expand Search), "complement ii algorithm" (Expand Search)
"elements ppm algorithm" » "elements ppo algorithm" (Expand Search), "elements pso algorithm" (Expand Search), "elements em algorithm" (Expand Search), "elements _ algorithm" (Expand Search), "elements b algorithm" (Expand Search), "elements fe algorithm" (Expand Search)

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("complement cnn algorithm") OR ("elements ppm algorithm"))) OR ("level coding algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"complement cnn algorithm\") OR (\"elements ppm algorithm\"))) OR (\"level coding algorithm\"))".
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