Perhaps you should try some spelling variations:
"creating v_ doi snippets" » "creating _ doi snippets", "creating a doi snippets", "creating va doi snippets", "creating ve doi snippets"
"reading a doi snippets" » "reading _ doi snippets", "reading 1 doi snippets", "reading 2 doi snippets", "reading va doi snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("creating v_ doi snippets") OR ("reading a doi snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( creating v_ doi snippets ) or ( reading a doi snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("creating v_ doi snippets") or ("reading a doi snippets"))) or ("locating bug code snippets"))*.