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