Perhaps you should try some spelling variations:
"duoc jav_ java snippets" » "duoc java java snippets", "duc jav_ java snippets", "quoc jav_ java snippets", "duoc jav_ java slippers"
"using a java snippets" » "using _ java snippets", "using a java slippers"
"locating bug code snippets" » "locating bug code slippers", "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 jav_ java snippets") or ("using a java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duoc jav_ java snippets") OR ("using a java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duoc jav_ java snippets ) or ( using a java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoc jav_ java snippets") or ("using a java snippets"))) or ("locating bug code snippets"))*.