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