Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lam duc hoan snippets" » "lam duc hoang snippets", "lam duc hoa snippets", "lam duc toan snippets", "lam duoc hoan snippets", "pham duc hoan snippets", "nam duoc hoan 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: (((("lam duc hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lam duc hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lam duc hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lam duc hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.