Perhaps you should try some spelling variations:
"cuu doan van snippets" » "cuu doan va snippets", "cuu hoang van snippets", "cuu luan van snippets", "cuu hoan van snippets", "cuu toan van snippets", "cua doanh van snippets", "cuu doan 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"

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: (((("python using a snippets") or ("cuu doan 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 ("cuu doan van snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using a snippets ) or ( cuu doan van snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using a snippets") or ("cuu doan van snippets"))) or ("locating bug code snippets"))*.