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