Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham hoa da snippets" » "pham khoa da snippets", "phan hoa da snippets", "pham hoang da snippets", "pham hoa dan snippets", "pham hoa dai snippets", "pham hoa dam 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 hoa da 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 hoa da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham hoa da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham hoa da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.