Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"doi hoi duc snippets" » "doi thoi duc snippets", "doi voi duc snippets", "doi moi duc snippets", "doi hoai duc snippets", "doi hoi suc snippets", "doi hoi uc 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: (((("doi hoi duc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( doi hoi duc snippets ) or ( python using java snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("doi hoi duc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.