Perhaps you should try some spelling variations:
"dusing java java snippets" » "using java java snippets"
"doi ngu java slippers" » "doi ngu va slippers", "doi nhu java slippers", "noi ngu java slippers", "doi nguoi java slippers", "doi ngu java slippery", "doi 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: (((("doi 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: (((("doi ngu java slippers") OR ("dusing java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi ngu java slippers ) or ( dusing java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi ngu java slippers") or ("dusing java java snippets"))) or ("locating bug code snippets"))*.