Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duy doc con snippets" » "day doc con snippets", "duy dac con snippets", "duy dot con snippets", "duy duc con snippets", "duy hoc con snippets", "duy hoc cong snippets"
"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: (((("duy doc con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duy doc con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duy doc con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duy doc con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.