Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"gian thuy do snippets" » "gian thua do snippets", "giao thuy do snippets", "giang thuc do snippets", "gian thuyet do snippets", "gian thay doi snippets", "gian thuat 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: (((("gian thuy 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: (((("gian thuy do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( gian thuy do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("gian thuy do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.