Perhaps you should try some spelling variations:
"dang java java snippets" » "dang va java 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"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dang java 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: (((("dang java java snippets") OR ("dung cac chap snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang java java snippets ) or ( dung cac chap snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang java java snippets") or ("dung cac chap snippets"))) or ("locating bug code snippets"))*.