Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"trinh dan code slippers" » "trinh han code slippers", "trinh van code slippers", "trinh san code slippers", "trinh dan de slippers"
"dang khai code snippets" » "dang khoi code snippets", "dang hai code snippets", "quang khai code 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 dan code slippers") or ("dang khai code snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh dan code slippers") OR ("dang khai code snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( trinh dan code slippers ) or ( dang khai code snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh dan code slippers") or ("dang khai code snippets"))) or ("locating bugs code snippets"))*.