Perhaps you should try some spelling variations:
"advanced validation using python programming" » "advanced oxidation using python programming" (Expand search), "advanced glication using python programming" (Expand search), "advanced visualization using python programming" (Expand search), "advanced valuation using python programming" (Expand search), "advanced validation in python programming" (Expand search), "advanced validation usando python programming" (Expand search)
"and convolutional codes coding program" » "and conventional codes coding program" (Expand search), "of convolutional codes coding program" (Expand search), "_ convolutional codes coding program" (Expand search), "and convolutional codes cloning program" (Expand search), "and convolutional codes loading program" (Expand search), "and convolutional codes cooling programs" (Expand search), "and convolutional codes going program" (Expand search), "and convolutional modern coding program" (Expand search), "and convolutional clouds coding program" (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: (("and convolutional codes coding program") OR ("advanced validation using python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"and convolutional codes coding program\") OR (\"advanced validation using python programming\"))".
• Removing quotes may allow a broader search: (( and convolutional codes coding program ) OR ( advanced validation using python programming )).
• Adding a wildcard symbol may retrieve word variants: (("and convolutional codes coding program") OR ("advanced validation using python programming"))*.