Perhaps you should try some spelling variations:
"dung huong rong snippets" » "dung thuong rong snippets", "dung phuong rong snippets", "dong huong rong snippets", "dung huong trong snippets", "dung huong dong snippets", "dung thuong trong 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 huong rong 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 huong rong snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung huong rong snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung huong rong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.