1. Kỹ thuật testing 2
Fds fdsf sdf sdf sdf sdf sdf sdf sd ds g
Fds fdsf sdf sdf sdf sdf sdf sdf sd ds gfds fdsf sdf sdf sdf sdf sdf sdf sd ds gfds fdsf sdf sdf sdf sdf sdf sdf sd ds gfds fdsf sdf sdf sdf sdf sdf sdf sd ds g

D asd asd as das fcdcxzv cxzv cxv xcv xcv xcv
D asd asd as das fcdcxzv cxzv cxv xcv xcv xcvd asd asd as das fcdcxzv cxzv cxv xcv xcv xcvd asd asd as das fcdcxzv cxzv cxv xcv xcv xcvd asd asd as das fcdcxzv cxzv cxv xcv xcv xcvd asd asd as das fcdcxzv cxzv cxv xcv xcv xcv

D asd asd as das fcdcxzv cxzv cxv xcv xcv xcv
D asd asd as das fcdcxzv cxzv cxv xcv xcv xcvd asd asd as das fcdcxzv cxzv cxv xcv xcv xcvd asd asd as das fcdcxzv cxzv cxv xcv xcv xcvd asd asd as das fcdcxzv cxzv cxv xcv xcv xcvd asd asd as das fcdcxzv cxzv cxv xcv xcv xcv

D asd asd as das fcdcxzv cxzv cxv xcv xcv xcv
D asd asd as das fcdcxzv cxzv cxv xcv xcv xcvd asd asd as das fcdcxzv cxzv cxv xcv xcv xcvd asd asd as das fcdcxzv cxzv cxv xcv xcv xcvd asd asd as das fcdcxzv cxzv cxv xcv xcv xcvd asd asd as das fcdcxzv cxzv cxv xcv xcv xcv

Fdsf dsf sdf ds fgds gdf gfd vbc bcfbxcgb cvx bcvbcvxb
Fdsf dsf sdf ds fgds gdf gfd vbc bcfbxcgb cvx bcvbcvxb fdsf dsf sdf ds fgds gdf gfd vbc bcfbxcgb cvx bcvbcvxb fdsf dsf sdf ds fgds gdf gfd vbc bcfbxcgb cvx bcvbcvxb fdsf dsf sdf ds fgds gdf gfd vbc bcfbxcgb cvx bcvbcvxb fdsf dsf sdf ds fgds gdf gfd vbc bcfbxcgb cvx bcvbcvxb