Perhaps you should try some spelling variations:
"learning vi trac snippets" » "learning via trac snippets", "learning _ trac snippets", "learning a trac snippets", "learning va trac snippets", "learning li trac snippets", "learning hoi trac snippets", "learning vi trac slippers"
"creating _ a snippets" » "creating _ a slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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