Perhaps you should try some spelling variations:
"coder precoder _ algorithms complexity" » "coder precoder _ algorithmic complexity" (Expand search), "coder decoder _ algorithms complexity" (Expand search)
"api with python python programming" » "api with pythons python programming" (Expand search), "api with piton python programming" (Expand search), "api with pitons python programming" (Expand search), "xapi with python python programming" (Expand search), "pi with python python programming" (Expand search), "ai with 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 _ algorithms complexity") OR ("api with python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder _ algorithms complexity\") OR (\"api with python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder _ algorithms complexity ) OR ( api with python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder _ algorithms complexity") OR ("api with python python programming"))*.