Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"de cong cac snippets" » "de cuong cac snippets", "de cong tac snippets", "de cong cau snippets", "den cong cac snippets", "te cong cac snippets", "ve cong cac 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 ("de cong cac snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("de cong cac snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( de cong cac snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("de cong cac snippets"))) or ("locating bug core snippets"))*.