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