Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"trinh co khoi snippets" » "trinh do khoi snippets", "trinh cong khoi snippets", "trinh hoa khoi snippets", "trinh co khi snippets", "trinh co hoi snippets", "trinh hoc khoi 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 ("trinh co khoi snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( trinh co khoi snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("trinh co khoi snippets"))) or ("locating bug core snippets"))*.