Perhaps you should try some spelling variations:
"using combinatoria _ precoder program" » "using combinatorial _ precoder program" (Expand search), "using combinator _ precoder program" (Expand search), "mixing combinatorial _ precoder program" (Expand search), "using combinatoria _ proder program" (Expand search), "using combinatoria _ recovery program" (Expand search), "using combinatoria _ precoce programa" (Expand search)
"advanced python programming and programming" » "advanced method programming and programming" (Expand search), "advanced path programming and programming" (Expand search), "advanced symphony programming and programming" (Expand search), "advanced python programming _ programming" (Expand search), "advanced python programming goal 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: "((\"using combinatoria _ precoder program\") OR (\"advanced python programming and programming\"))~".
• Removing quotes may allow a broader search: (( using combinatoria _ precoder program ) OR ( advanced python programming and programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("using combinatoria _ precoder program") OR ("advanced python programming and programming"))*.