Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dua moi da snippets" » "cua moi da snippets", "dua voi da snippets", "vua moi da snippets", "dua moi dan snippets", "dua moi la snippets", "dua moi va 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: (((("dua moi da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dua moi da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dua moi da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dua moi da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.