Perhaps you should try some spelling variations:
"cung hanh trinh snippets" » "cung canh tranh snippets", "cung hanh chinh snippets", "cong thanh trinh snippets", "vung nhanh trinh snippets", "cung thang trinh snippets", "cung hanh trinh slippers"
"using c code snippets" » "using lc code snippets", "using a code snippets", "using _ code snippets", "using cfd code snippets", "using c 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: (((("using c code snippets") or ("cung hanh trinh snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using c code snippets") OR ("cung hanh trinh snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using c code snippets ) or ( cung hanh trinh snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using c code snippets") or ("cung hanh trinh snippets"))) or ("locating bug code snippets"))*.