Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"locating bug core snippets" » "locating bug code snippets"
"phan co hat snippets" » "phan bo hat snippets", "phan cong hat snippets", "phan cac hat snippets", "phan co hoat snippets", "phan cot hat snippets", "phan co hai 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 ("phan co hat snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( phan co hat snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("phan co hat snippets"))) or ("locating bug core snippets"))*.