Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van duong di snippets" » "van duong code snippets", "van dong di snippets", "van dung di snippets", "van phong di snippets", "van duong dai snippets", "van duong thi snippets", "van duong loi snippets"
"using java java snippets" » "using data 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: (((("using java java snippets") OR ("van duong di snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java java snippets ) or ( van duong di snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java java snippets") or ("van duong di snippets"))) or ("locating bug core snippets"))*.