Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sam chon cac snippets" » "nam chon cac snippets", "sam phong cac snippets", "cam chan cac snippets", "sam cho cac snippets", "sam thong cac snippets", "sam hoc cac 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: (((("sam chon cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sam chon cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sam chon cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sam chon cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.