Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"php van anh snippets" » "phap van anh snippets", "phi van anh snippets", "pha van anh snippets", "php van thanh snippets", "php van minh snippets", "php tuan anh 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: (((("php van anh snippets") OR ("python using java snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( php van anh snippets ) or ( python using java snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("php van anh snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.