Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"do dan cach snippets" » "do dan cac snippets", "do dan canh snippets", "do nhan cach snippets", "do danh cach snippets", "dao dan cach snippets", "do dang cach 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 dan cach snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( do dan cach snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("do dan cach snippets"))) or ("locating bug core snippets"))*.