Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"locating bug core snippets" » "locating bug code snippets"
"cong tu viet snippets" » "cong ty viet snippets", "cong cu viet snippets", "dong tu viet snippets", "cong su viet snippets", "cong te viet snippets", "cong nu 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 tu viet snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( cong tu viet snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("cong tu viet snippets"))) or ("locating bug core snippets"))*.