Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"doi hoc duc snippets" » "doi hoac duc snippets", "dai hoc duc snippets", "hoi hoc duc snippets", "doi hoc duoc snippets", "doi hoc nuoc snippets", "doi hoc thuc snippets", "doi hoc 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: "((((\"doi hoc duc snippets\") OR (\"python using java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( doi hoc duc snippets ) OR ( python using java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("doi hoc duc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets"))*.