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