Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duoc moi da snippets" » "duoc hoi da snippets", "duoc noi da snippets", "duoc tuoi da snippets", "duoc moi dan snippets", "duoc moi la snippets", "duoc moi va 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 moi da 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 moi da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duoc moi da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoc moi da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.