Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"dao luan dat snippets" » "dan luan dat snippets", "dao xuan dat snippets", "dat luan dat snippets", "dao luat dat snippets", "dao luan dac snippets", "dao luan day 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 ("dao luan dat snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( dao luan dat snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("dao luan dat snippets"))) or ("locating bug core snippets"))*.