Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan con den snippets" » "nhan co den snippets", "nhanh cong den snippets", "phan cong den snippets", "nhan con de snippets", "nhan don den snippets", "nhan cuong den 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: (((("nhan con den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhan con den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan con den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan con den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.