Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan ngan c snippets" » "van ngan c snippets", "dai ngan c snippets", "dang nganh c snippets", "dan gan c snippets", "dan nganh co snippets", "dan ngan bac 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 ngan c 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 ngan c snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan ngan c snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan ngan c snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.