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