Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"using real java snippets" » "using metal java snippets", "using raw java snippets", "using real java slippers"
"van cung va snippets" » "van cuong va snippets", "van dung va snippets", "van hung va snippets", "van vung va snippets", "van cong va snippets", "van cung va slippers"

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 (\"van cung va snippets\"))) OR (\"locating bugs code snippets\"))~".
• Removing quotes may allow a broader search: (((( using real java snippets ) OR ( van cung va snippets ))) OR ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using real java snippets") OR ("van cung va snippets"))) OR ("locating bugs code snippets"))*.