Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"locating bug core snippets" » "locating bug code snippets"
"dang do sach snippets" » "nang doc sach snippets", "dung doi sach snippets", "dang duc sach snippets", "dang doc sach snippets", "dang do sanh snippets", "dang bo sach 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 ("dang do sach snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( dang do sach snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("dang do sach snippets"))) or ("locating bug core snippets"))*.