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