Perhaps you should try some spelling variations:
"dang van java snippets" » "hoang van java snippets", "hang va java snippets"
"dung tao de snippets" » "dung tai de snippets", "dung bao de snippets", "dung tay de snippets", "dung tao he snippets", "dung nao de snippets", "dung cao de 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 van java snippets") or ("dung tao de snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang van java snippets") OR ("dung tao de snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang van java snippets ) or ( dung tao de snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang van java snippets") or ("dung tao de snippets"))) or ("locating bug code snippets"))*.