Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doan dao voi snippets" » "doanh dao voi snippets", "doan dau voi snippets", "dan dao voi snippets", "doan da voi snippets", "doan dao noi snippets", "doan do voi 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 voi 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 voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doan dao voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan dao voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.