Perhaps you should try some spelling variations:
"coder decoder array based problem" » "encoder decoder array based problem" (Expand search), "coder diode array based problem" (Expand search), "coder decoder array based problems" (Expand search), "coder decoder array based probe" (Expand search), "coder decoder array posed problem" (Expand search), "coder decoder assay based problem" (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 decoder array based problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder decoder array based problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder decoder array based problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder decoder array based problem") OR ("api python python python programming"))*.