Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"do canh doi snippets" » "do thanh doi snippets", "do tinh doi snippets", "do cau doi snippets", "doi canh doi snippets", "do sanh doi snippets", "do danh doi 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: "((((\"python using java snippets\") OR (\"do canh doi snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( python using java snippets ) OR ( do canh doi snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") OR ("do canh doi snippets"))) OR ("locating bug code snippets"))*.