Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"cong van thi snippets" » "cong vang thi snippets", "cong san thi snippets", "song van thi snippets", "cong van tai snippets", "cong dan thi snippets", "cong van thu 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 ("cong van thi snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( cong van thi snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("cong van thi snippets"))) or ("locating bug core snippets"))*.