Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"manh ho toc snippets" » "manh hon toc snippets", "minh hoa toc snippets", "danh hoa toc snippets", "manh hoa toc snippets", "manh co toc snippets", "manh so toc 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: (((("manh ho 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: (((("manh ho toc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( manh ho toc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("manh ho toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.