Perhaps you should try some spelling variations:
"prca practical guides" » "prca practical guide", "prca practice guide", "prca practices guide", "era practical guides", "pea practical guides", "karaca practical guides"
"africa practical guides" » "africa practical guide", "africa practice guide", "africa practices guide", "africa critical guides", "african political guides"
prca practice » oca practice, data practice, cysa practice
a practice » a practical

Try widening your search to All Fields.

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: (("((prca practice) or (a practice)) guides") OR ((("prca practical guides") OR ("africa practical guides")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"((prca practice) or (a practice)) guides\") or (((\"prca practical guides\") OR (\"africa practical guides\"))))".
• Removing quotes may allow a broader search: (( ((prca practice) or (a practice)) guides ) or ((( prca practical guides ) OR ( africa practical guides )))).
• Adding a wildcard symbol may retrieve word variants: (("((prca practice) or (a practice)) guides") or ((("prca practical guides") OR ("africa practical guides"))))*.