Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hai long toc snippets" » "hai phong toc snippets", "hai duong toc snippets", "hai long soc snippets", "hai long thuoc snippets", "hai long tong 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: (((("hai long toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hai long toc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hai long toc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hai long toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.