Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam so cung snippets" » "nam so chung snippets", "nam so cong snippets", "nam so dung snippets", "nam sao cung snippets", "nam bo cung 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 so cung 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 so cung snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam so cung snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam so cung snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.