Vietnam can change their tactics, while Malaysia has a clear style but limited attacking options and missing players.

Malaysia's coach Tan Cheng Hoe has used similar tactics in all matches.

Malaysia has player problems.

Malaysia is a strong team but lacks many attacking options and has injured players.

Vietnam is hard to predict.

Kim Sang Sik's team is one of the hardest to predict in the tournament.

Kim kept the same lineup against Singapore but made changes in other matches.

Vietnam played solidly in midfield against Indonesia.

Kim made few defensive changes but tried different attacking combinations.

Commentators think Vietnam is becoming more versatile, especially in attack.

Dinh Bac can play in different positions.

The roles of Hoang Hen, Tai Loc, and Xuan Son are hard to predict.

Quang Hai may keep his place in midfield despite not being at his best.

Quang Hai is a key player for Vietnam and has done well in big matches.

Hai Long and Thanh Long are other good midfield options for Kim.

Vietnam seems prepared, and Kim's tactics will be key to winning.

Vietnam will play on an unfamiliar surface.

Vietnam trained in Malaysia on August 14.

The training was at Kelab Aman, near the team hotel.

A Vietnam team had checked the training facility beforehand.

The training ground has cow grass, which is different from what Vietnam's players are used to.

The first leg will not be at the big Bukit Jalil Stadium.

The match will be at Kuala Lumpur Stadium, which is smaller.

The stadium's cow-grass surface could help Malaysia.

The surface can slow the ball, and players may need to adjust.

The smaller pitch could also affect Vietnam's attacks.

Adapting to the conditions is part of Kim's plan.

Defender Tien Anh hopes the team can adapt and get a good result.

Vietnam and Malaysia play on August 16 and 19.

Malaysia is missing key players but remains confident.

If Vietnam struggles with the surface, Malaysia's problem is missing players.

Malaysia has been hit by many absences ahead of the semifinal.

Malaysia now has only around 18 players for the first leg.

Midfielder Wan Kuzain has returned to the US.

Kuzain was a discovery for Malaysia at the ASEAN Cup.

Kuzain impressed after starting in a decisive group match.

Malaysia also has injured midfielders Endrick and Aliff Haiqal.

Some other players have minor injuries.

Coach Tan remains calm.

If some players are out, others like Aysar Hadi could play in midfield.

Tan is focused on the present and not worried about the past.

Tan sees this as a chance for younger players to prove themselves.

Tan believes in his players and will not pick someone just to fill a spot.

Tan knows Vietnam is strong but thinks home advantage can help.

Vietnam's unfamiliar surface and Malaysia's determination could make the match complicated.

Vietnam has an advantage because Kim's tactics are unpredictable.

Dang Van Lam got a birthday surprise from his teammates.

The team sang 'Happy Birthday' and Van Lam was touched.

Dai Nam - Ngoc Huy