Perhaps you should try some spelling variations:
"dang hang cau snippets" » "dang hoang cau snippets", "dang hung cau snippets", "dang hanh cau snippets", "dang hang dau snippets", "dang hang ca snippets", "dang nhung cau 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: (((("dang hang cau snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang hang cau snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang hang cau snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang hang cau snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.