Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nao tu hong snippets" » "nao thu hong snippets", "nao tu phong snippets", "nao tu dong snippets", "tao tu hong snippets", "lao tu hong snippets", "cao tu hong 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 tu hong 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 tu hong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nao tu hong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nao tu hong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.