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