Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"when van tru snippets" » "when can tru snippets", "thien van tru snippets", "phan van tru snippets", "when van thu snippets", "when van tu snippets", "when van tri snippets", "when van tru 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("when van tru snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("when van tru snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( when van tru snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("when van tru snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.