Perhaps you should try some spelling variations:
"luat kinh java slippers" » "qua kinh java slippers", "luoc kinh java slippers", "xuan kinh java slippers", "luat trinh java slippers", "luat kinh kala slippers", "luat kinh va slippers", "luat kinh java slippery", "luat kinh 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: (((("luat kinh 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: (((("luat kinh java slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luat kinh java slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luat kinh java slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.