Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nao dan mon snippets" » "nao dang mon snippets", "nam dan mon snippets", "dao dan mon snippets", "nao dap mon snippets", "nao dan dong snippets", "nao dong mon 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: (((("nao dan mon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nao dan mon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nao dan mon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nao dan mon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.