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