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