Perhaps you should try some spelling variations:
"van hoc code snippets" » "van hoc co snippets", "van hoc cong snippets", "van hoc de snippets", "van hoa code snippets", "van hocfd code snippets", "van hoc code 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"

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 ("van hoc code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using c code snippets") OR ("van hoc code snippets"))) OR ("locating bug code snippets"))*.
• Removing quotes may allow a broader search: (((( using c code snippets ) or ( van hoc code snippets ))) or ( locating bug code snippets ))*.