Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cum dan den snippets" » "cum danh den snippets", "cua dan den snippets", "cu dan den snippets", "cum ban den snippets", "cum van den snippets", "cum dan dung 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: (((("cum dan den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cum dan den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cum dan den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cum dan den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.