Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"van cac nhan snippets" » "van ca nhan snippets", "van cac nha snippets", "van cam nhan snippets", "van hac nhan snippets", "van cau nhan snippets", "van bac nhan snippets"
"locating bug core snippets" » "locating bug code 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 code snippets") OR ("van cac nhan snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( van cac nhan snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("van cac nhan snippets"))) or ("locating bug core snippets"))*.