Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doan dao noi snippets" » "doanh dao noi snippets", "doan dau noi snippets", "dan dao noi snippets", "doan dao voi snippets", "doan nao noi 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: (((("doan dao noi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doan dao noi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doan dao noi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan dao noi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.