Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan thu do snippets" » "dan thuc do snippets", "dan thue do snippets", "dang thu do snippets", "dan thuy do snippets", "dan khu do snippets", "dan tu 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: (((("dan thu 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: (((("dan thu do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan thu do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan thu do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.