Perhaps you should try some spelling variations:
"coder coder vhdl computer introduction" » "coder coder vhdl computer instruction" (Expand search), "coder coder vhdl complex introduction" (Expand search), "coder coder vhdl consumer introduction" (Expand search), "coder coder and computer introduction" (Expand search), "coder coder uml computer introduction" (Expand search), "coder decoder vhdl computer introduction" (Expand search), "code code vhdl computer introduction" (Expand search), "decoder codec vhdl computer introduction" (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 coder vhdl computer introduction") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder vhdl computer introduction\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coder vhdl computer introduction ) OR ( api python python python programming ))*.