Perhaps you should try some spelling variations:
"advanced estimation of java programing" » "advanced automation of java programing" (Expand search), "advanced optimization of java programing" (Expand search), "advanced oxidation of java programing" (Expand search), "advanced estimation of java programming" (Expand search), "advanced estimation of java programs" (Expand search), "advanced estimation of meta programming" (Expand search), "advanced estimation of japan programing" (Expand search)
"using python python python programming" » "using pythons python python programming" (Expand search), "using piton python python programming" (Expand search), "using pitons python python programming" (Expand search), "usando python python python programming" (Expand search), "in python 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: (("advanced estimation of java programing") OR ("using python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"advanced estimation of java programing\") OR (\"using python python python programming\"))".
• Removing quotes may allow a broader search: (( advanced estimation of java programing ) OR ( using python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("advanced estimation of java programing") OR ("using python python python programming"))*.