Perhaps you should try some spelling variations:
"creating a trac snippets" » "creating _ trac snippets", "creating va trac snippets", "creating tap trac snippets", "creating anh trac snippets"
"reading a d snippets" » "reading _ d snippets", "reading 1 d snippets", "reading 2 d snippets", "reading a 3d 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"reading a d snippets\") OR (\"creating a trac snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( reading a d snippets ) OR ( creating a trac snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("reading a d snippets") OR ("creating a trac snippets"))) OR ("locating bug code snippets"))*.