Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"van dinh liu snippets" » "van minh liu snippets", "van dich liu snippets", "va dinh liu snippets", "van dinh li snippets", "van binh lieu snippets", "van dinh tieu 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 dinh liu snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( van dinh liu snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("van dinh liu snippets"))) or ("locating bug core snippets"))*.