Perhaps you should try some spelling variations:
"hoa dan trinh slippers" » "hoa dan tinh slippers", "hoa van trinh slippers", "hoa hanh trinh slippers", "khoa dan trinh slippers", "hoa dan trinh slippery", "hoa dan 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 dan 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 dan trinh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoa dan trinh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoa dan trinh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.