Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc ma dan slippers" » "duoc ma dan slippers", "duc mau dan slippers", "duc man dan slippers", "duc mat dan slippers", "duc mua dan slippers", "duc ca dan slippers", "duc ma dan slippery", "duc ma dan grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("duc ma dan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc ma dan slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc ma dan slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc ma dan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.