Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam dang de snippets" » "nam dan de snippets", "nam danh de snippets", "nam dong de snippets", "nam dang deo snippets", "nam dung de snippets", "nam dang do 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: (((("nam dang de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nam dang de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam dang de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam dang de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.