Perhaps you should try some spelling variations:
"van cau code snippets" » "van cau cong snippets", "van cau de snippets", "van cfd code snippets", "van dau code snippets", "van hau code snippets", "van chat code snippets", "van cau code 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"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"van cau code snippets\") OR (\"python using a snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( van cau code snippets ) OR ( python using a snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("van cau code snippets") OR ("python using a snippets"))) OR ("locating bug code snippets"))*.