Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"than ke don snippets" » "thanh ke don snippets", "than ky don snippets", "toan ke don snippets", "than ke dan snippets", "than ke do snippets", "than ke doc 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: (((("than ke 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: (((("than ke don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( than ke don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("than ke don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.