Perhaps you should try some spelling variations:
"python using data snippets" » "python using java snippets", "python using sat snippets", "python missing data snippets"
"locating bug core snippets" » "locating bug code snippets"
"dao du code snippets" » "dao bug code snippets", "dao duc code snippets", "dao duy code snippets", "dao do 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: "((((\"dao du code snippets\") OR (\"python using data snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( dao du code snippets ) OR ( python using data snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dao du code snippets") OR ("python using data snippets"))) OR ("locating bug core snippets"))*.