Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"hoc cong dung snippets" » "hoc cuong dung snippets", "hoc cong dong snippets", "hoc cong luong snippets", "hoc co dung snippets", "cac cong dung snippets", "hoc dung dung 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 ("hoc cong dung snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( hoc cong dung snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("hoc cong dung snippets"))) or ("locating bug core snippets"))*.