Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hao van du snippets" » "dao van du snippets", "ho van du snippets", "cao van du snippets", "hao van duy snippets", "hao van dau snippets", "hao van de 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.

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