Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"cong cau dan snippets" » "cong cu dan snippets", "cong chuc dan snippets", "thong cau dan snippets", "cong cau danh snippets", "cong cac dan snippets", "cong ca dan 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 ("cong cau dan snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"using java code snippets\") OR (\"cong cau dan snippets\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( using java code snippets ) OR ( cong cau dan snippets ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") OR ("cong cau dan snippets"))) OR ("locating bug core snippets"))*.