Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhat cao toc snippets" » "nha cao toc snippets", "chat cao toc snippets", "nhat cho toc snippets", "nhat cac toc snippets", "nhat cao hoc snippets", "nhat cao ngoc 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: (((("nhat cao toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhat cao toc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhat cao toc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhat cao toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.