Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"dan lan tranh snippets" » "dan lanh tranh snippets", "dan luan tranh snippets", "dan can tranh snippets", "dan lap tranh snippets", "dam lan tranh 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 ("dan lan tranh snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( dan lan tranh snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("dan lan tranh snippets"))) or ("locating bug core snippets"))*.