Perhaps you should try some spelling variations:
"coder codes and database preprocessing" » "coder codes and database processing" (Expand search), "coder codes and dataset preprocessing" (Expand search), "coder codes and data preprocessing" (Expand search), "coder codes _ database preprocessing" (Expand search), "color codes and database preprocessing" (Expand search), "order codes and database preprocessing" (Expand search), "code code and database preprocessing" (Expand search), "coder code and database preprocessing" (Expand search), "coder modes and database preprocessing" (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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder codes and database preprocessing\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder codes and database preprocessing ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder codes and database preprocessing") OR ("api python python python programming"))*.