As the match progressed, Germany assumed control and Turkey's goalkeeper Mert Gunok had to be on guard to defuse long-range efforts from Julian Brandt and Luca Waldschmidt before the break.
Germany is in danger of being relegated to Nations League Group B this season after two draws against Spain and Switzerland.
After the restart, Turkey caught a bright start and restored parity only five minutes into the second half when Ozan Tufan drilled the ball from 18 meters into the top right corner.
However, Kuusk's teammate Rauno Sappinen scored on 33 minutes and 61 minutes, which was followed by a penalty by Frank Liivak, lifting the hosts to 3-1 up.
The Czech is yet to drop a set and will face fourth-seeded Sofia Kenin of the United States for a place in the final. The reigning Australian Open champion survived a fight-back from Danielle Collins in the second set and dominated the deciding one to reach the semis 6-4, 4-6, 6-0.
Teenager Talles Magno, a key member of the Brazil team that won last year's under-17 World Cup, put Vasco ahead in the ninth minute at their Sao Januario stadium with an easy tap-in following Cayo Tenorio's cross.
Italy added another in the 30th minute when El Shaarawy found the net with the outside of his boot.
Wang pocketed a game-high 20 points for Fujian, who also got help from Wei's 19 and Sun Mengzhu's 13.
Kevin Monnet-Paquet, forward for French Ligue 1 side Saint-Etienne, is among the foreign-based players, and will be the first time he appears for Amavubi.
"However, in order to attract more to this sport, we arrange four players a team with a woman in each. The more people take part in, the better beach volleyball is popularized, and that's where the success of a sport lies in," said Liu.
"It is true that the altitude is difficult. It can be suffocating. But what is really important is the flight of the ball and how that changes."