Perhaps you should try some spelling variations:
"coder authentication using java programming" » "coffee authentication using java programming" (Expand search), "user authentication using java programming" (Expand search), "layer authentication using java programming" (Expand search), "coder authentication in java programming" (Expand search), "coder authentication and java programming" (Expand search), "coder authentication of java programming" (Expand search), "coder authentication using and programming" (Expand search), "coder authentication using based programming" (Expand search), "coder authentication using goal programming" (Expand search)
"python in python python programming" » "python in pythons python programming" (Expand search), "python in piton python programming" (Expand search), "python in pitons python programming" (Expand search), "python and python python programming" (Expand search), "python _ python python programming" (Expand search), "python of 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: (("coder authentication using java programming") OR ("python in python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder authentication using java programming\") OR (\"python in python python programming\"))".
• Removing quotes may allow a broader search: (( coder authentication using java programming ) OR ( python in python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder authentication using java programming") OR ("python in python python programming"))*.