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