Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc what can snippets" » "luc nhat can snippets", "luc ha can snippets", "luc nhan can snippets", "luc hau can snippets", "luc bat can snippets", "luc pham can 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 what can 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 what can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc what can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc what can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.