Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"dung quan doan snippets" » "dung quang doan snippets", "dung luan doan snippets", "luong quan doan snippets", "dung quan hoang snippets", "dung chuan doan snippets", "dung chan doan 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 ("dung quan doan snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"using java code snippets\") OR (\"dung quan doan snippets\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( using java code snippets ) OR ( dung quan doan snippets ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") OR ("dung quan doan snippets"))) OR ("locating bug core snippets"))*.