Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hung dan da snippets" » "huong dan da snippets", "dung dan da snippets", "tung dan da snippets", "hung dan dat snippets", "hung dan ca snippets", "hung dan va snippets"
"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: "((((\"hung dan da snippets\") OR (\"python using java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( hung dan da snippets ) OR ( python using java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("hung dan da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets"))*.