Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tot cong cho snippets" » "mot cong cho snippets", "toc cong cho snippets", "bot cong cho snippets", "tot dong cho snippets", "tot cong co snippets", "tot rong cho 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: (((("tot cong cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tot cong cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tot cong cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tot cong cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.