Perhaps you should try some spelling variations:
"cu thi doan snippets" » "cu thi code snippets", "cu thai doan snippets", "cu thi hoan snippets", "cu thi loan snippets", "cau thi doan snippets", "chu thi doan snippets", "su thi doan snippets"
"lochating bug core snippets" » "locating bug core snippets", "lochating bug code snippets"
"python using java snippets" » "python using data 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: (((("cu thi doan snippets") or ("python using java snippets"))) or ("lochating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cu thi doan snippets") OR ("python using java snippets"))) OR ("lochating bug core snippets")).
• Removing quotes may allow a broader search: (((( cu thi doan snippets ) or ( python using java snippets ))) or ( lochating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cu thi doan snippets") or ("python using java snippets"))) or ("lochating bug core snippets"))*.