Perhaps you should try some spelling variations:
"dat hanh trinh slippers" » "dat canh tranh slippers", "dat hanh chinh slippers", "dat khanh trinh slippers", "dat thanh trinh slippers", "dao hanh trinh slippers", "dat hanh trinh slippery", "dat hanh 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"

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 ("dat hanh 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 ("dat hanh trinh slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( dat hanh trinh slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("dat hanh trinh slippers"))) or ("locating bug code snippets"))*.