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