Perhaps you should try some spelling variations:
"quan ninh lua slippers" » "quang ninh lua slippers", "quan binh lua slippers", "quan tinh lua slippers", "quan dinh lua slippers", "quan binh luan slippers", "quan hinh luat slippers", "quan ninh lua slippery", "quan ninh lua grippers"
"dung java java snippets" » "dung va java 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: (((("quan ninh lua slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quan ninh lua slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quan ninh lua slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quan ninh lua slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.