Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan huu cho snippets" » "pham huu cho snippets", "phan huy cho snippets", "phan hieu cho snippets", "phan huu co snippets", "phan huu ho snippets", "phan huu tho 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: (((("phan huu cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan huu cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan huu cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan huu cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.