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