Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"luan dan he snippets" » "luan danh he snippets", "luan van he snippets", "luat dan he snippets", "luan dan ve snippets", "luan dan de snippets", "luan dan ke 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 ("luan dan he snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( luan dan he snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("luan dan he snippets"))) or ("locating bug core snippets"))*.