Perhaps you should try some spelling variations:
"coder precoder array algorithm comparison" » "coder precoder array algorithms comparison" (Expand search), "coder precoder greedy algorithm comparison" (Expand search), "coder precoder massey algorithm comparison" (Expand search), "coder decoder array algorithm comparison" (Expand search), "coder precise array algorithm comparison" (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)

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

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