Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"hoan hat dan snippets" » "hoan hao dan snippets", "hoa hat dan snippets", "hoang nhat dan snippets", "hoan hat van snippets", "hoan mat dan snippets", "hoan nhat danh 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 ("hoan hat dan snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( hoan hat dan snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("hoan hat dan snippets"))) or ("locating bug core snippets"))*.