Perhaps you should try some spelling variations:
"_ convolutional coding of program" » "_ convolutional codes of program" (Expand search), "_ convolutional code of program" (Expand search), "_ convolutional long of program" (Expand search), "_ convolutional coding of programs" (Expand search), "_ convolutional bonding of program" (Expand search), "_ convolutional coding _ program" (Expand search)
"engine optimization python python programming" » "engine optimization method python programming" (Expand search), "engine optimization option python programming" (Expand search), "engine optimization methods python programming" (Expand search), "engine optimization pythons python programming" (Expand search), "engine optimization piton python programming" (Expand search), "engine optimization 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: "((\"_ convolutional coding of program\") OR (\"engine optimization python python programming\"))~".
• Removing quotes may allow a broader search: (( _ convolutional coding of program ) OR ( engine optimization python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("_ convolutional coding of program") OR ("engine optimization python python programming"))*.