Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"viet trinh van snippets" » "viet trung van snippets", "viet thanh van snippets", "viet trong van snippets", "viet trinh han snippets", "viet trinh quan snippets", "viet trinh toan snippets"
"using a java snippets" » "using _ java 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: (((("viet trinh van snippets") OR ("using a java snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( viet trinh van snippets ) or ( using a java snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("viet trinh van snippets") or ("using a java snippets"))) or ("locating bug core snippets"))*.