Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"using raw java snippets" » "using real java snippets", "using a java snippets", "using low java snippets"
"vi ung java grippers" » "vi using java grippers", "vi ngu java grippers", "vi ung va grippers", "va ung java grippers", "vi luong java grippers", "vi trung java grippers", "vi ung java slippers"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vi ung java grippers") OR ("using raw java snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( vi ung java grippers ) or ( using raw java snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("vi ung java grippers") or ("using raw java snippets"))) or ("locating bug core snippets"))*.