Perhaps you should try some spelling variations:
"cac duong van snippets" » "cac duong va snippets", "cac luong va snippets", "cac dang van snippets", "cau duong van snippets", "cac tuong van snippets", "cac dong van snippets", "cac duong van slippers"
"python using a snippets" » "python using a slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

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

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