Perhaps you should try some spelling variations:
"using java core snippets" » "using data core snippets"
"cay dan dat snippets" » "cac dan dat snippets", "ca dan dat snippets", "cay lanh dat snippets", "cay dung dat snippets", "cay dong dat snippets", "cay dinh dat snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs 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 core snippets") or ("cay dan dat snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java core snippets") OR ("cay dan dat snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java core snippets ) or ( cay dan dat snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java core snippets") or ("cay dan dat snippets"))) or ("locating bug code snippets"))*.