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