Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"dan toan dat snippets" » "van toan dat snippets", "dan than dat snippets", "manh toan dat snippets", "dan toan dam snippets", "dan toan dai snippets", "dan tan dat snippets"
"locating bug core snippets" » "locating bug code snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using java code snippets") or ("dan toan dat snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("dan toan dat snippets"))) OR ("locating bug core snippets"))*.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( dan toan dat snippets ))) or ( locating bug core snippets ))*.