Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duong che o snippets" » "dong che o snippets", "dung che o snippets", "luong che o snippets", "duong che do snippets", "duong che ho snippets", "duong chet o 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: "((((\"duong che o snippets\") OR (\"python using java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( duong che o snippets ) OR ( python using java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("duong che o snippets") OR ("python using java snippets"))) OR ("locating bug code snippets"))*.