Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"do cong cua snippets" » "do cong cu snippets", "do dong cua snippets", "do huong cua snippets", "doi cong cua snippets", "do hong cua snippets", "bo cong cua 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 ("do cong cua snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( do cong cua snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("do cong cua snippets"))) or ("locating bug core snippets"))*.