South Africa retained their spot at the top of the Group G standings after recording back-to-back wins over Ethiopia, including a narrow 1-0 victory at the FNB Stadium on Tuesday evening.
Hugo Broos' side now remain unbeaten in qualifying after previously playing out a goalless draw against Zimbabwe and beating Ghana, but the Belgian tactician believes there are still areas in need of improvement within the squad.
"Little by little, I will find the group with which I will work within the coming months, maybe years," Broos said.
"But we're still looking for better players because we still have some weaknesses in our group, certainly.
"It would be a miracle after two months' work that you immediately have a fantastic team. This is impossible, so we have to continue working as a technical team to go and watch more games to see more good players who can bring more quality to our team.
"But, in general, I can say now that we're not so far from the group of players that we'll continue working for the next months or years."
South Africa will next play host to neighbours Zimbabwe on 11 November, before travelling to Ghana for what could well prove to be the match that decides which nation progresses to the Third Round of qualifying.