Perhaps you should try some spelling variations:
"trinh cau han slippers" » "trinh chat han slippers", "trinh chao han slippers", "trinh tu han slippers", "trinh cau chan slippers", "trinh cau phan slippers", "trinh chu han slippers", "trinh cau han slippery", "trinh cau han grippers"
"dung dung code snippets" » "duong dung code snippets", "ung dung code snippets", "dung ung code snippets", "dung dung cong snippets", "dung dung co snippets", "dung dung de snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs 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 cau han slippers") or ("dung dung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh cau han slippers") OR ("dung dung code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh cau han slippers ) or ( dung dung code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh cau han slippers") or ("dung dung code snippets"))) or ("locating bug code snippets"))*.