Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duoc nhi den snippets" » "duoc noi den snippets", "duong nhi den snippets", "duoc si den snippets", "duoc thai den snippets", "duoc khi dien snippets", "duoc nghi don 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: (((("duoc nhi den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duoc nhi den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duoc nhi den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoc nhi den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.