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