Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan ngu noi snippets" » "han ngu noi snippets", "dan ngan noi snippets", "den nguy noi snippets", "dan nu noi snippets", "dan ngu nguoi snippets", "dan nguoi 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: (((("dan ngu 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: (((("dan ngu noi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan ngu noi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan ngu noi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.