Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toc giang vo snippets" » "ngoc giang vo snippets", "bac giang vo snippets", "toc giay vo snippets", "toc giang o snippets", "toc giang ve snippets", "toc giang van 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 giang vo 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 giang vo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toc giang vo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc giang vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.