Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham can toc snippets" » "pham van toc snippets", "pham lan toc snippets", "pham ca toc snippets", "pham dan toc snippets", "pham cac toc snippets", "pham cao toc 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: (((("pham can 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: (((("pham can toc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham can toc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham can toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.