Perhaps you should try some spelling variations:
"vi ung java slippers" » "vi using java slippers", "vi ngu java slippers", "vi ung va slippers", "va ung java slippers", "vi luong java slippers", "vi trung java slippers", "vi ung java slippery", "vi ung java grippers"
"using a java snippets" » "using _ java snippets"
"locating bug code snippets" » "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 a java snippets\") OR (\"vi ung java slippers\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( using a java snippets ) OR ( vi ung java slippers ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using a java snippets") OR ("vi ung java slippers"))) OR ("locating bug code snippets"))*.