Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"do van code snippets" » "do van de snippets", "do van hoe snippets", "do van cong snippets", "dao van code snippets", "vo van code snippets", "so van code snippets"
"locating bug core snippets" » "locating bug code 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 van code snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( python using java snippets ) OR ( do van code snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") OR ("do van code snippets"))) OR ("locating bug core snippets"))*.