Perhaps you should try some spelling variations:
"tan hanh trinh slippers" » "tan canh tranh slippers", "tan hanh chinh slippers", "tan thanh trinh slippers", "tang hanh trinh slippers", "toan hanh trinh slippers", "tan hanh trinh slippery", "tan 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: (((("tan 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: (((("tan hanh trinh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tan hanh trinh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tan hanh trinh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.