Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"cuong vo java slippers" » "luong va java slippers", "duong va java slippers", "cong va java slippers", "cuong vo java slippery", "cuong vo 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: (((("cuong vo 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: (((("cuong vo java slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cuong vo java slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cuong vo java slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.