Perhaps you should try some spelling variations:
"dung using data snippets" » "dung ung data snippets", "dung sinh data snippets", "dung uong data snippets", "dung using java snippets", "dung using sat snippets", "dung missing data snippets"
"dung cao dong snippets" » "duong cao dong snippets", "dung cho dong snippets", "dung co dong snippets", "dung cao dang snippets", "dung lao dong snippets", "dung cao cong 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: (((("dung cao dong snippets") or ("dung using data snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cao dong snippets") OR ("dung using data snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cao dong snippets ) or ( dung using data snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cao dong snippets") or ("dung using data snippets"))) or ("locating bug code snippets"))*.