Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using data snippets" » "python using java snippets", "python using sat snippets", "python missing data snippets"
"phan so van snippets" » "phan bo van snippets", "phan co van snippets", "phap so van snippets", "phan su van snippets", "phan vo 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: (((("python using data snippets") OR ("phan so van snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( python using data snippets ) or ( phan so van snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("python using data snippets") or ("phan so van snippets"))) or ("locating bug core snippets"))*.