Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dung java java grippers" » "dung va java grippers", "dung java java slippers"
"tran tuan thu snippets" » "tran xuan thu snippets", "tran quang thu snippets", "tran thanh thu snippets", "tran toan thuc snippets", "tran van thu 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: "((((\"dung java java grippers\") OR (\"tran tuan thu snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( dung java java grippers ) OR ( tran tuan thu snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung java java grippers") OR ("tran tuan thu snippets"))) OR ("locating bug core snippets"))*.