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