Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"menh van toc snippets" » "dinh van toc snippets", "nen van toc snippets", "benh va toc snippets", "menh van hoc snippets", "menh dan toc snippets", "menh van toi 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: (((("menh van 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: (((("menh van toc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( menh van toc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("menh van toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.