Perhaps you should try some spelling variations:
"dung tran tuan slippers" » "dung tren tuan slippers", "hung tran tuan slippers", "dang tran tuan slippers", "dung tran xuan slippers", "dung tran quang slippers", "dung tran thanh slippers", "dung tran tuan slippery", "dung tran tuan grippers"
"dung bug code snippets" » "dung dung code snippets", "dung hung code snippets", "dung rung code snippets", "dung bug core snippets"
"locating bug 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 bug code snippets") or ("dung tran tuan slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung bug code snippets") OR ("dung tran tuan slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung bug code snippets ) or ( dung tran tuan slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung bug code snippets") or ("dung tran tuan slippers"))) or ("locating bug code snippets"))*.