Perhaps you should try some spelling variations:
"cong trinh code snippets" » "cong trinh cong snippets", "cong trinh co snippets", "cong trinh cad snippets"
"using l code snippets" » "using lc code snippets", "using a code snippets", "using _ code snippets", "using lbm code snippets"
"locating bug code slippers" » "locating bung code slippers", "locating bugs code slippers"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using l code snippets") or ("cong trinh code snippets"))) or ("locating bug code slippers"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using l code snippets") OR ("cong trinh code snippets"))) OR ("locating bug code slippers"))*.
• Removing quotes may allow a broader search: (((( using l code snippets ) or ( cong trinh code snippets ))) or ( locating bug code slippers ))*.