Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc noi cong snippets" » "luc nguoi cong snippets", "luc tai cong snippets", "luc thi cong snippets", "luc moi cong snippets", "luc doi cong snippets", "truc noi cong 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: (((("luc noi cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luc noi cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc noi cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc noi cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.