Perhaps you should try some spelling variations:
"van doanh tinh snippets" » "van doan tinh snippets", "van doanh thanh snippets", "van nhanh tinh snippets", "toan doanh tinh snippets", "van dong tinh snippets", "van thanh tinh snippets"
"python using a slippers" » "python using a slippery", "python using a grippers"
"locating bug code snippets" » "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.

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