Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngoc lan can snippets" » "ngoc tuan can snippets", "nuoc luan can snippets", "ngoc anh can snippets", "ngoc ban can snippets", "ngoc lan dan snippets", "ngoc lan san 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 lan can 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 lan can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngoc lan can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngoc lan can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.