Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"ban danh nghe snippets" » "ban anh nghe snippets", "ban dang nghe snippets", "ban hanh nghe snippets", "ban doanh nghe snippets", "ban dan nghe snippets"
"locating bug code snippets" » "locating bug core snippets", "locating bung code snippets", "locating bugs 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 ("ban danh nghe snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( ban danh nghe snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("ban danh nghe snippets"))) or ("locating bug code snippets"))*.