Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"van doan vu snippets" » "van doanh vu snippets", "van toan vu snippets", "van hoan vu snippets", "van doan va snippets", "van doan vi snippets", "van doan tu 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: (((("van doan vu snippets") OR ("python using java snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( van doan vu snippets ) or ( python using java snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("van doan vu snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.