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