Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngoc tu da snippets" » "ngoc thu da snippets", "ngon tu da snippets", "ngoc tuan da snippets", "ngoc tu dat snippets", "ngoc tu dau snippets", "ngoc tu dan 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: (((("ngoc tu 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: (((("ngoc tu da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngoc tu da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngoc tu da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.