Perhaps you should try some spelling variations:
"coder decoding _ algorithms complexity" » "coder decoding _ algorithmic complexity" (Expand search), "coding decoding _ algorithms complexity" (Expand search), "coder decoder _ algorithms complexity" (Expand search), "barcode decoding _ algorithms complexity" (Expand search)
"api pitoes python python programming" » "api pitons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pythons python python programming" (Expand search), "api pitoes pythons python programming" (Expand search), "api pitoes piton python programming" (Expand search), "api pitoes pitons 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 decoding _ algorithms complexity\") OR (\"api pitoes python python programming\"))~".
• Removing quotes may allow a broader search: (( coder decoding _ algorithms complexity ) OR ( api pitoes python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder decoding _ algorithms complexity") OR ("api pitoes python python programming"))*.