Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc son toc snippets" » "lac son toc snippets", "luc sang toc snippets", "quoc son toc snippets", "luc so toc snippets", "luc son nuoc snippets", "luc song toi 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: (((("python using java snippets") or ("luc son toc snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("luc son toc snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( luc son toc snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("luc son toc snippets"))) or ("locating bug code snippets"))*.