Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"him luan san snippets" » "ham luan san snippets", "pham luan san snippets", "li luan san snippets", "him luan van snippets", "him luan hoan snippets", "him luan phan snippets", "him luan san slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("him luan san snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("him luan san snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( him luan san snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("him luan san snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.