Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toc moi cua snippets" » "hoc moi cua snippets", "toc mo cua snippets", "toc noi cua snippets", "toc hoi cua snippets", "toc doi cua snippets", "toc moi quan 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: (((("toc moi cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toc moi cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toc moi cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc moi cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.