Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nuoc so den snippets" » "nuoc o den snippets", "nuoc xo den snippets", "nuoc ao den snippets", "nuoc so dan snippets", "nuoc se 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: (((("nuoc so 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: (((("nuoc so den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nuoc so den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nuoc so den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.