Perhaps you should try some spelling variations:
"trinh toan xac slippers" » "tinh toan xac slippers", "thanh toan xac slippers", "trinh han xac slippers", "trinh toan ban slippers", "trinh toan hoc slippers", "trinh toan tap slippers", "trinh toan xac slippery", "trinh toan xac 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 xac 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 xac slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh toan xac slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh toan xac slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.