Perhaps you should try some spelling variations:
"va duong code snippets" » "va duong co snippets", "va duong cong snippets", "va duong che snippets", "van duong code snippets", "va tuong code snippets", "va huong code snippets"
"using java java snippets" » "using data java 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: (((("va duong code snippets") OR ("using java java snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( va duong code snippets ) or ( using java java snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("va duong code snippets") or ("using java java snippets"))) or ("locating bug core snippets"))*.