Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van truong cac snippets" » "van truong code snippets", "tang truong cac snippets", "xuan truong cac snippets", "vien truong cac snippets", "van truong cao snippets", "van trong cac snippets", "van truong ca snippets"
"using sat java snippets" » "using data java snippets", "using a java snippets", "using raw java snippets", "using sat va snippets"

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: (((("using sat java snippets") OR ("van truong cac snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using sat java snippets ) or ( van truong cac snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using sat java snippets") or ("van truong cac snippets"))) or ("locating bug core snippets"))*.