Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoi dan voi snippets" » "hoa dan voi snippets", "hoc dan voi snippets", "hoi dap voi snippets", "hoi dan hoi snippets", "hoi ban voi snippets", "hoi da 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: (((("hoi dan 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: (((("hoi dan voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoi dan voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoi dan voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.