Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thong cua do snippets" » "thong quan do snippets", "thong tu do snippets", "huong cua do snippets", "thong cua dao snippets", "thong cua bo snippets", "thong cua co 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: (((("thong cua do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thong cua do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thong cua do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thong cua do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.