Perhaps you should try some spelling variations:
"data using java snippets" » "data using data snippets"
"dung cac chap snippets" » "luong cac chap snippets", "dung cho chap snippets", "dung tai chap snippets", "dung cac chat snippets", "dung cac cap snippets", "dung cau chap snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("data using java snippets") or ("dung cac chap snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("data using java snippets") OR ("dung cac chap snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( data using java snippets ) or ( dung cac chap snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("data using java snippets") or ("dung cac chap snippets"))) or ("locating bug code snippets"))*.