Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam he co snippets" » "nam ha co snippets", "nam hien co snippets", "nam nghe co snippets", "nam de co snippets", "nam ke co snippets", "nam ve co 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: (((("nam he co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nam he co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam he co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam he co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.