Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"locating bug core snippets" » "locating bug code snippets"
"cong ca viet snippets" » "cong cua viet snippets", "cong cau viet snippets", "cong cac viet snippets", "cong va viet snippets", "cong co viet snippets", "cong hoa viet 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 ("cong ca viet snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( cong ca viet snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("cong ca viet snippets"))) or ("locating bug core snippets"))*.