Perhaps you should try some spelling variations:
"coder preprocessing _ algorithm array" » "novel preprocessing _ algorithm array" (Expand search), "noise preprocessing _ algorithm array" (Expand search), "the preprocessing _ algorithm array" (Expand search), "coder preprocessing _ algoritmos array" (Expand search), "coder preprocessing _ algorithm aaa" (Expand search), "coder preprocessing _ algorithm binary" (Expand search)
"api python python python programming" » "api pythons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pitons python python programming" (Expand search), "rpa python python python programming" (Expand search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder preprocessing _ algorithm array") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder preprocessing _ algorithm array\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder preprocessing _ algorithm array ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder preprocessing _ algorithm array") OR ("api python python python programming"))*.