Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"doan oc van snippets" » "doan o van snippets", "doan ngoc van snippets", "doan quoc van snippets", "doan hoc van snippets", "doan luoc van 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: (((("doan oc van snippets") OR ("python using java snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( doan oc van snippets ) or ( python using java snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("doan oc van snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.