Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam phan hoc snippets" » "dam phan hoc snippets", "nam thanh hoc snippets", "nam thang hoc snippets", "nam phap hoc snippets", "nam phan hoa snippets", "nam phau hoc 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 phan hoc 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 phan hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam phan hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam phan hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.