Perhaps you should try some spelling variations:
"dong cung code slippers" » "dong chung code slippers", "dong hung code slippers", "dong cong code slippers"
"trinh ra code snippets" » "trinh va code snippets", "trinh da code snippets", "trinh ha code snippets", "trinh rate code 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 ra code snippets") or ("dong cung code slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh ra code snippets") OR ("dong cung code slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh ra code snippets ) or ( dong cung code slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh ra code snippets") or ("dong cung code slippers"))) or ("locating bug code snippets"))*.