Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao nam don snippets" » "dan nam don snippets", "dang nam don snippets", "dao nam dong snippets", "dao nam dan snippets", "dao nam do 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: (((("dao nam don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao nam don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao nam don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao nam don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.