Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nho quan den snippets" » "nha quan den snippets", "nuoc quan den snippets", "ngoc quan den snippets", "nho quan doan snippets", "nho quan he snippets", "nho quan doi 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: (((("nho quan 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: (((("nho quan den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nho quan den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nho quan den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.