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