Perhaps you should try some spelling variations:
"using real java snippets" » "using metal java snippets", "using raw java snippets", "using real java slippers"
"vi using java slippery" » "vi using data slippery", "vi sinh java slippery", "_ using java slippery", "vi ung java slippery", "vi using java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"using real java snippets\") OR (\"vi using java slippery\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( using real java snippets ) OR ( vi using java slippery ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using real java snippets") OR ("vi using java slippery"))) OR ("locating bug code snippets"))*.