Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dat dua voi snippets" » "dai dua voi snippets", "dat cua voi snippets", "dat hua voi snippets", "dat da voi snippets", "dat dua moi snippets", "dat sua voi 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 (\"dat dua voi snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( python using java snippets ) OR ( dat dua voi snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") OR ("dat dua voi snippets"))) OR ("locating bug code snippets"))*.