Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toc dan ve snippets" » "hoc dan ve snippets", "toc dao ve snippets", "toc san ve snippets", "toc ban ve snippets", "toc dan va snippets", "toc dan viet 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 dan ve 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 dan ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toc dan ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc dan ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.