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