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

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: (((("hoa hanh trinh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoa hanh trinh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoa hanh trinh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoa hanh trinh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.