Perhaps you should try some spelling variations:
"dung hanh tot snippets" » "dung thanh tot snippets", "dang hanh tot snippets", "dung danh tot snippets", "dung hanh noi snippets", "dung hanh tu snippets", "dung hanh hoa snippets"
"dung java java snippets" » "dung va java 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 hanh tot snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung hanh tot snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung hanh tot snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung hanh tot snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.