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