Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"via van duc snippets" » "va van duc snippets", "gian van duc snippets", "giay van duc snippets", "via van duy snippets", "via van du snippets", "via tran duc snippets", "via van duc slippers"
"locating bug code snippets" » "locating bug code slippers", "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: "((((\"via van duc snippets\") OR (\"python using java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( via van duc snippets ) OR ( python using java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("via van duc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets"))*.