Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"dong sach hoi snippets" » "duong sach hoi snippets", "dung sach hoi snippets", "cong sach hoi snippets", "dong sach doi snippets", "dong sach moi snippets", "dong cach thoi 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 ("dong sach hoi snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( dong sach hoi snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("dong sach hoi snippets"))) or ("locating bug core snippets"))*.