Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam do deu snippets" » "nam dao deu snippets", "nam doi deu snippets", "nam bo deu snippets", "nam do dieu snippets", "nam do de 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 do deu 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 do deu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam do deu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam do deu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.