Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tong tu du snippets" » "thong tu du snippets", "tuong tu du snippets", "trong tu du snippets", "tong tu duy snippets", "tong tu dau snippets", "tong tru du 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: (((("tong tu du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tong tu du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tong tu du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tong tu du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.