Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"le cong trong snippets" » "le cong thuong snippets", "le cong trinh snippets", "le dung trong snippets", "len cong trong snippets", "te cong trong snippets", "ve cong trong 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 ("le cong trong snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( le cong trong snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("le cong trong snippets"))) or ("locating bug core snippets"))*.