Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"toc viet duoi snippets" » "toc viet doi snippets", "toc viet duong snippets", "toc viet dung snippets", "hoc viet duoi snippets", "thuc viet duoi snippets", "ngoc viet duoi 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 ("toc viet duoi snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( toc viet duoi snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("toc viet duoi snippets"))) or ("locating bug core snippets"))*.