Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"using java can snippets" » "using java code snippets", "using data can snippets"
"dung dung luan snippets" » "duong dung luan snippets", "ung dung luan snippets", "dung ung luan snippets", "dung dung quan snippets", "dung dung lan 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 can snippets") or ("dung dung luan snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java can snippets") OR ("dung dung luan snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( using java can snippets ) or ( dung dung luan snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java can snippets") or ("dung dung luan snippets"))) or ("locating bug core snippets"))*.