Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"dot phan viet snippets" » "dot phap viet snippets", "dot han viet snippets", "dot pham viet snippets", "dot pha viet snippets", "doc phan viet snippets", "mot phan viet 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 ("dot phan viet snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( dot phan viet snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("dot phan viet snippets"))) or ("locating bug core snippets"))*.