Perhaps you should try some spelling variations:
"trong trinh ung slippers" » "trong tinh ung slippers", "trang trinh ung slippers", "trong thinh ung slippers", "trong trinh dung slippers", "trong trinh duong slippers", "trong trinh nhung slippers", "trong trinh ung slippery", "trong trinh ung 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 ("trong trinh ung slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("trong trinh ung slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( trong trinh ung slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("trong trinh ung slippers"))) or ("locating bug code snippets"))*.