Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"trinh lap lai snippets" » "trinh luat lai snippets", "trinh luan lai snippets", "trinh phap lai snippets", "trinh lap tai snippets", "trinh lay lai snippets", "trinh lam lai 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 lap lai snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( trinh lap lai snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("trinh lap lai snippets"))) or ("locating bug core snippets"))*.