Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dung java java snippets" » "dung va java snippets"
"van danh dat snippets" » "van doanh dat snippets", "van anh dat snippets", "van hanh dat snippets", "van danh bat snippets", "van dinh dat snippets", "van dan dat 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: (((("van danh dat snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( van danh dat snippets ) or ( dung java java snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("van danh dat snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.