Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van cong cac snippets" » "van cong code snippets", "van dong cac snippets", "van phong cac snippets", "phan cong cac snippets", "van cuong cac snippets", "van cong tac snippets", "van cong cau snippets"
"using real java snippets" » "using metal java snippets", "using raw java snippets"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using real java snippets") or ("van cong cac snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using real java snippets") OR ("van cong cac snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( using real java snippets ) or ( van cong cac snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using real java snippets") or ("van cong cac snippets"))) or ("locating bug core snippets"))*.