Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van cuong cac snippets" » "van cuong code snippets", "van chuong cac snippets", "van duong cac snippets", "van cong cac snippets", "van luong cac snippets", "van trong cac snippets"
"dung java java snippets" » "dung va java 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: "((((\"van cuong cac snippets\") OR (\"dung java java snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( van cuong cac snippets ) OR ( dung java java snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("van cuong cac snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets"))*.