Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu lam son snippets" » "thieu lam son snippets", "lieu lam son snippets", "tieu lam son snippets", "hieu lam san snippets", "hieu lam sang snippets", "hieu lang son 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: (((("hieu lam son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hieu lam son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu lam son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu lam son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.