Perhaps you should try some spelling variations:
"using java java snippets" » "using data java snippets", "using java java slippers"
"trinh van tra snippets" » "trinh han tra snippets", "trinh quan tra snippets", "trinh toan tra snippets", "trinh van tri snippets", "trinh van tru snippets", "trinh dan tra snippets", "trinh van tra slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core 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 java snippets") OR ("trinh van tra snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( using java java snippets ) or ( trinh van tra snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java java snippets") or ("trinh van tra snippets"))) or ("locating bug code snippets"))*.