Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toc hoi doai snippets" » "toc hoi doi snippets", "toc hoi thoai snippets", "toc hoi dap snippets", "toc hoc doai snippets", "hoc hoi doai snippets", "toc noi doai 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 hoi doai 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 hoi doai snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toc hoi doai snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc hoi doai snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.