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