Perhaps you should try some spelling variations:
"tran phong dat slippers" » "tran hong dat slippers", "van phong dat slippers", "tran hoang dat slippers", "tran phong mat slippers", "tran phong phat slippers", "tran dong dat slippers", "tran phong dat slippery", "tran phong dat 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: (((("tran phong dat slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tran phong dat slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran phong dat slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran phong dat slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.