Perhaps you should try some spelling variations:
"dung phat mon snippets" » "dung phan mon snippets", "dang phat mon snippets", "dung chat mon snippets", "dung hat mon snippets", "dung phap mon snippets", "dung phat minh 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 phat mon 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 phat mon snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung phat mon snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung phat mon snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.