Perhaps you should try some spelling variations:
"dung phu trinh snippets" » "dung phu tinh snippets", "dung phuc thinh snippets", "dung phu ninh snippets", "dung phan trinh snippets", "dung cho trinh snippets", "dung he trinh snippets", "dung phu trinh slippers"
"dung cong code snippets" » "dung trong code snippets", "dung cong cong snippets", "dung cong co snippets", "dung cong che snippets", "dung cong code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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 phu trinh snippets") or ("dung cong code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung phu trinh snippets") OR ("dung cong code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung phu trinh snippets ) or ( dung cong code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung phu trinh snippets") or ("dung cong code snippets"))) or ("locating bug code snippets"))*.