Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc giua cac snippets" » "duc gia cac snippets", "do giua cac snippets", "duc giao cac snippets", "duc giua cau snippets", "duc cua cac snippets", "duc gian cac 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: (((("duc giua cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc giua cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc giua cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc giua cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.